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Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Hosts Dick Clark, right, and Ryan Seacrest pose on the set of "Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2012" in Times Square in New York on Dec. 31, 2011. AP Photo/ABC/Ida Mae Astute

(CBS News) Ryan Seacrest became the co-host  in "Dick Clark's New Year's Rockin' Eve" in 2006, after Clark suffered from a stroke and was unable to do the show alone. The two rang in the new year this year, for what would be Clark's last appearance on the program. He  died  April 18, 2012.

Pictures: Dick Clark 1929-2012

Seacrest released a statement about Clark's passing:

"I am deeply saddened by the loss of my dear friend Dick Clark. He has truly been one of the greatest influences in my life. I idolized him from the start, and I was graced early on in my career with his generous advice and counsel. When I joined his show in 2006 , it was a dream come true to work with him every New Year's Eve for the last 6 years. He was smart, charming, funny and always a true gentleman. I learned a great deal from him, and I'll always be indebted to him for his faith and support of me. He was a remarkable host and businessman and left a rich legacy to television audiences around the world. We will all miss him."

In addition, the TV personality tweeted, "I am deeply saddened by the loss of my dear friend Dick Clark. He has truly been one of the greatest influences in my life."

Click through to see other celebrity reaction.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Joan Rivers is seen around Lincoln Center during Fall 2012 Mercedes-Benz Fashion Week at Lincoln Center on Feb. 14, 2012, in New York City. Andrew H. Walker/Getty Images

Joan Rivers

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

INDIO, CA - APRIL 15: Rapper Snoop Dogg performs onstage during day 3 of the 2012 Coachella Valley Music & Arts Festival at the Empire Polo Field on April 15, 2012 in Indio, California. (Photo by Christopher Polk/Getty Images for Coachella) Christopher Polk

Snoop Dogg

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Russell Simmons attends 3rd Annual 'Change Begins Within' Benefit Celebration at Los Angeles Times Central Court on Dec. 3, 2011, in Los Angeles, Calif. Jason Merritt/Getty Images

Russell Simmons

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

NEW YORK - OCTOBER 22: (L-R) Zac Hanson, Taylor Hanson, and Isaac Hanson of the band Hanson hold a guitar painted by the band during the VH1 Save the Music Foundation Family Day at the The Anderson School on October 22, 2011 in New York City. (Photo by Mike Coppola/Getty Images) Mike Coppola

Hanson

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Al Roker attends Nickelodeon Hosts Orange Carpet Premiere For Original TV Movie 'Big Time Movie' Starring Big Time Rush at 583 Park Avenue on March 8, 2012, in New York City. Michael Loccisano/Getty Images for Nickelodeon)

Al Roker

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Actress Holly Robinson Peete arrives at the Premiere Of Columbia Pictures' "21 Jump Street" at Grauman's Chinese Theatre on March 13, 2012, in Hollywood, Calif. Frazer Harrison/Getty Images

Holly Robinson Peete

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

NEW YORK, NY - MARCH 19: Actress Melissa Joan Hart attends the 2012 ABC Family Upfront at the Mandarin Oriental Hotel on March 19, 2012 in New York City. (Photo by Jason Kempin/Getty Images) Jason Kempin

Melissa Joan Hart

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Actress/TV Personality Jenny McCarthy arrives at the NBCUniversal summer press day held at The Langham Huntington Hotel and Spa on April 18, 2012, in Pasadena, Calif. Frederick M. Brown/Getty Images

Jenny McCarthy

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Actor Seth Green arrives at Spike TV's '2011 Video Game Awards' at Sony Studios on December 10, 2011, in Los Angeles, Calif. Frazer Harrison/Getty Images

Seth Green

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

NEW YORK, NY - JUNE 14: Andy Cohen attends the 2nd Annual amfAR Inspiration Gala at The Museum of Modern Art on June 14, 2011 in New York City. (Photo by Neilson Barnard/Getty Images) Neilson Barnard

Andy Cohen

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Mario Lopez arrives at the 63rd Primetime Emmy Awards on Sunday, Sept. 18, 2011, in Los Angeles. Pictures: Emmy Awards 2011 Pictures: Emmy Award winners 2011 AP Photo/Matt Sayles

Mario Lopez

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

New York City Mayor Michael Bloomberg attends Glamour's 2011 Women of the Year Awards on Nov. 7, 2011, in New York. Theo Wargo/Getty Images for Glamour Magazine

Michael Bloomberg

He continues on saying:

"Times Square is considered the crossroads of the world in no small part because Dick Clark's New Years Eve celebrations there were beamed across the globe. I remember one New Years Eve, he and I stood in Times Square marveling about how much the area - and the City - had improved over the years. But Dick Clark never had to change - he was a great entertainer who stood the test of time. Generations of Americans grew up with Dick, and yet he seemed forever young. His spirit will always live on in Times Square, and in the hearts of millions of New Yorkers."

Berry Gordy

"I'm saddened and devastated over the loss of my dear friend, Dick Clark. We were friends for over 50 years. My thoughts and condolences go out to his family, especially his wonderful wife, Kari, who took such incredible care of him always. Dick was always there for me and Motown, even before there was a Motown. He was an entrepreneur, a visionary and a major force in changing pop culture and ultimately influencing integration. It happened first emotionally. Music can do that. He didn't do it from a soap box, he just did it. That's who he was. 'American Bandstand' was a platform for all artists. For me personally, he helped bring Motown into living rooms across America. Dick did everything with class, style and integrity. He was a true gentleman. His groundbreaking achievements in music and television ensure that his legacy will live on forever," said Motown founder Berry Gordy in a statement.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Barry Manilow arrives at The 53rd Annual Grammy Awards held at Staples Center on February 13, 2011, in Los Angeles. Jason Merritt/Getty Images

Barry Manilow

"This is a sad day.He was a dear friend, supporting me and my music for all of my years in the business.A great businessman and a true gentleman. An inspiration.My heart is so heavy now," wrote singer Barry Manilow on his Facebook page, along with a picture of him and Clark at the 2006 Emmy Awards.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Chief Creative Officer of Sony Music Entertainment Clive Davis speaks onstage at Clive Davis and the Recording Academy's 2012 Pre-GRAMMY Gala and Salute to Industry Icons Honoring Richard Branson held at The Beverly Hilton Hotel on Feb. 11, 2012, in Beverly Hills, Calif. Larry Busacca/Getty Images For The Recording Academy

Clive Davis

"Dick Clark was a true pioneer who revolutionized the way we listened to and consumed music. Before 'American Idol,' 'X Factor' and 'The Voice,' even before MTV, it was 'American Bandstand,' which brought the most popular music of the day straight to the nation's living rooms. Many artists made their debut on the Bandstand stage, and for generations he steadfastly welcomed millions of fans to his celebrations of the best of contemporary music. For me he ranks right up there with the giants of our business," said Clive Davis in a statement.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

L.A. Reid speaks during the BET Honors 2012 at the Warner Theatre on Jan. 14, 2012, in Washington. Kris Connor/Getty Images

L.A. Reid

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Recording Artist John Oates of Hall and Oates performs as part of CMT Presents 'Ron White's Comedy Salute To The Troops' A Special Honoring The Armed Forces Premiering Saturday, March 12 on CMT. All performaces taped at the Grand Ole Opry House on [February 15, 2011] in Nashville. Rick Diamond/Getty Images for CMT

John Oates

"Dick's understated yet omnipresent personality created a new media format. With an understated on-air presence, he made the kids and their music the stars of the show. His genius was in his ability to use the power of television to help define how American teenagers saw themselves. Dick Clark's 'American Bandstand' spread the gospel of American pop music and teenage style that transcended the regional boundaries of our country and united a youth culture that eventually spread its message throughout the entire world. With his passing, Dick Clark deserves to take his place at the top in the pantheon of popular culture icons," said John Oates of Hall & Oates.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Radio personality Bruce "Cousin Brucie" Morrow attends The Davy Jones Memorial: 'An Evening of Music & Memories' at B.B. King Blues Club & Grill on April 3, 2012, in New York City. Cindy Ord/Getty Images

Bruce "Cousin Brucie'' Morrow

Legendary New York City disc jockey Bruce "Cousin Brucie" Morrow says Dick Clark was the kind of guy you'd want as a next-door-neighbor. He called Clark "a sweet, charming, very honest guy." Although the two men were competitors, Morrow said they nurtured each other. He said the number of people Clark helped build their careers "looked like the New York City telephone directory."

h2>Les Moonves

"He's one of these guys who will be remembered 50 years from now, because my guess is ABC will still have 'New Year's Rockin' Eve' on, and the Golden Globes will still be here, which he created, and the Academy of Country Music Awards, plus the American Music Awards, there are numerous things that will leave his legacy forever," said CBS President and CEO Les Moonves.

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

Producers Michael E. Uslan, left, and Deborah Del Prete arrive at the premiere of "The Spirit" on Dec. 17, 2008, in Hollywood, Calif. Kevin Winter/Getty Images

Michael Uslan

"Dick Clark was The Great Communicator spanning generations of rock n' roll fans. He single-handedly made Rock 'n' Roll acceptable on the heels of societal backlash to its threatening beat and the gyrations of Elvis Presley. American cities were organizing record burnings until a young (eternally so), polished, well-dressed and properly groomed young man brought this music into the living rooms of America, letting the parents, teachers, ministers and politicians know that this music and its new young performers were acceptable for their teens and tweens. Dick Clark single-handedly legitimized rock n' roll and opened its artists to long careers. In doing so, Dick created an atmosphere in which fifty years later, rock has become the only music that doesn't solely belong to any one age group. It's a world cultural experience shared by kids, parents and grandparents. Thank Dick Clark for that," said Michael Uslan executive producer of the Batman franchise of films and co-author of the 1981 book "Dick Clark's The First 25 Years of Rock & Roll."

Dick Clark mourned by President Obama, Ryan Seacrest and other celebrities

In a June 30, 1958 file photo Dick Clark, at podium at upper left, is surrounded by teen-age fans on his nationally televised dance show "American Bandstand" in Philadelphia, Pa. Dick Clark stood as an avatar of rock 'n' roll until his death Wednesday April 18, 2012, at age 82. AP Photo/file

American Bandstand Alumni Bunny Gibson

Dick Clark "was very all-American, handsome, and nice, a father figure to us," she recalled. "He made sure the guys wore suits and we were dressed properly. He molded the image of the American teenager so America would accept rock-and-roll," said Bunny Gibson,66, who was a kid when Clark came into her life, reports the Philadelphia Inquirer.