NEW YORK (CBS/AP) Updated 10:03 p.m. EDT
British monarchy drama "The King's Speech" took the top honor at Sunday night's Screen Actor's Guild Awards, winning the award for best cast performance in a film.
The film also picked up a best actor award for star Colin Firth, while Natalie Portman won the lead-actress trophy for "Black Swan."
The wins secure their front-runner status for next month's Academy Awards.
"The Fighter" co-stars Christian Bale and Melissa Leo swept the supporting-acting honors for their roles in the boxing drama, boosting their own prospects come Oscar night.
"Boardwalk Empire" took two TV awards, best dramatic ensemble and best actor for Steve Buscemi. Alec Baldwin won his fifth-straight prize as TV comedy actor for "30 Rock," while 89-year-old Betty White was picked as best TV comedy actress for "Hot in Cleveland."
Julianna Margulies of "The Good Wife" won for TV dramatic actress. "Modern Family" earned the TV comedy ensemble award.
The big-screen prizes are the night's main events, with winners gaining momentum for the same honors at the Oscars.
Before the show began, the Guild presented its award for film stunt ensemble to the sci-fi blockbuster "Inception" and the TV stunt prize to the vampire drama "True Blood."
"The King's Speech" capped a weeklong surge of Hollywood honors, which included an upset win at Saturday's Directors Guild of America Awards for Tom Hooper, who beat favorite David Fincher ("The Social Network").
Last Tuesday, "The King's Speech" claimed a leading 12 Oscar nominations, and it pulled a surprise win for top honors from the Producers Guild of America the previous weekend.