Meredith Vieira

From left, "Today" show co-host Al Roker (as Superman), co-host Natalie Morales (as Justin Bieber), actors Tina Fey and Will Ferrell (dressed as their "Megamind" characters), co-host Ann Curry (as Amelia Earhart) and co-host Meredith Vieira (as Lady Gaga) appear on NBC's "Today" Halloween episode at Rockefeller Plaza on Oct. 29, 2010, in New York.

Credit: Stephen Lovekin/Getty Images