Robert Downey Jr. poses backstage with the award for favorite movie superhero for his role as "Iron Man" at the People's Choice Awards at the Nokia Theatre, in Los Angeles.—Photo by AP

The cast of "The Big Bang Theory" pose backstage after winning the award for favorite network tv comedy at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Actress Emma Watson poses with Favorite Drama Movie award for "The Perks of Being a Wallflower" in the press room at the 39th Annual People's Choice Awards at Nokia Theatre L.A., in Los Angeles, California.—Photo by AFP

Robert Downey Jr., of the film "The Avengers," poses with his award for favorite movie actor backstage at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Adam Levine (L) and James Valentine of Maroon 5 accept the award for "Favorite Band" at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Model and television personality Heidi Klum arrives at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Singer Taylor Swift poses as she arrives at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Actor Jenson Ackles, of the series "Supernatural," arrives at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Socialite Paris Hilton poses as she arrives at the 2013 People's Choice Awards in Los Angeles.—Photo by Reuters

Actor Nathan Fillion celebrates in the press room after winning Favorite Dramatic TV Actor during the People's Choice Awards at the Nokia Theatre in Los Angeles, California.—Photo by AFP

Jennifer Lawrence accepts the award for favorite movie actress at the People's Choice Awards at the Nokia Theatre, in Los Angeles.—Photo by AP