A Complete List of Winners SAG awards 2011| SAG watch online|

LOS ANGELES —

"The King's Speech" won the best-actor trophy Sunday for Colin Firth and a second honor for its overall cast at the Screen Actors Guild Awards.

The two prizes capped a weeklong surge of Hollywood honors for the British monarchy saga, which is building momentum for the Feb. 27 Academy Awards, where the Facebook drama "The Social Network" previously had looked like the favorite.

Natalie Portman earned the best-actress award at the Screen Actors ceremony for "Black Swan," while "The Fighter" co-stars Christian Bale and Melissa Leo swept the supporting-acting honors, boosting their own prospects come Oscar night.

Screen Actor's Guild Awards: A complete list of winners

THEATRICAL MOTION PICTURES

Outstanding performance by a male actor in a leading role
Colin Firth, "The King's Speech"

Outstanding performance by a female actor in a leading role
Natalie Portman, "Black Swan"

Outstanding performance by a male actor in a supporting role
Christian Bale, "The Fighter"

Outstanding performance by a female actor in a supporting role
Melissa Leo, "The Fighter"

Outstanding performance by a cast in a motion picture
"The King's Speech"

TELEVISION

Outstanding performance by a male actor in a drama series
Steve Buscemi, "Boardwalk Empire"

Outstanding performance by a female actor in a drama series
Julianna Margulies, "The Good Wife"

Outstanding performance by a male actor in a comedy series
Alec Baldwin, "30 Rock"

Outstanding performance by a female actor in a comedy series
Betty White, "Hot in Cleveland"

Outstanding performance by an ensemble in a drama series
"Boardwalk Empire"

Outstanding performance by an ensemble in a comedy series
"Modern Family"

Outstanding performance by a male actor in a television movie or miniseries
Al Pacino, "You Don't Know Jack"

Outstanding performance by a female actor in a television movie or Miniseries
Claire Danes, "Temple Grandin"