Update, 6:06 p.m.:
Dick Van Dyke presents the Lifetime Achievement Award to his former "Dick Van Dyke Show" co-star Mary Tyler Moore, delivering a heartfelt speech citing her screen work and humanitarian work. Moore received a standing ovation from the crowd.
Moore began her speech by recalling how she had to alter her name from "Mary Moore" due to multiple listings of the same name in the SAG roster.
"I, too, am happy after all," Moore said while wrapping up her speech.
Also read: SAG Awards 2012: The Complete List of Winners and Nominees
After the speech, Dick Van Dyke gave her a peck on the cheek.
Previously…
Alec Baldwin took his sixth win for Best Male Actor in a Comedy Series at the Screen Actors Guild Awards on Sunday, for his portrayal of Jack Donaghy on "30 Rock."
The actor, who recently just named ambassador for SAG, fulfilled his duties by encouraging charitable acts among the audience, in particular stumping for a cause called Book Pals.
Betty White was also an early winner, picking up her second consecutive trophy for Best Female Actor in a Comedy Series for her work in "Hot in Cleveland."
"I think they made a terrible mistake," White joked, before saying that the nomination belongs to all four female leads on the series.
Kate Winslet also took an award in the Outstanding Female Actress in a TV or Miniseries for her work in "Midred Pierce."
Paul Giamatti took home an award for his portrayal of Ben Bernanke in HBO's "Too Big to Fail."
Jessica Lange won the Best Supporting Actress in a Drama Series award — her first SAG award — for "American Horror Story."
"To be an actor means everything to me, so thank you so much," Lange told the assemblage.
Steve Buscemi also took home a win, for his starring role in the HBO drama "Boardwalk Empire." The cast of the series received an award in the Outstanding Performance by an Ensemble in a Drama Series category.