They all took home Screen Actors Guild Awards on Sunday night, a reliable prognosticator of the Feb. 27 Oscars.
Among those she thanked, Portman singled out her parents, "who taught me to work the hardest and never to be an a--hole, that wasn't acceptable."
Firth, acknowledging those in the room, joked, "I'd like to thank security for letting me into the building."
Leo brought along six of the seven women who played her daughters in the fight drama, while Bale took to the stage of L.A.'s Shrine Auditorium with the real-life character he plays, Dicky Eklund.
Outstanding movie ensemble was the cast of The King's Speech. Besides Firth, they include Helena Bonham-Carter and Geoffrey Rush.
TelevisionIn TV honors, Hot in Cleveland leading comedy actress Betty White, 89, fondled the bare backside of her award, which is called the Actor. 30 Rock's Alec Baldwin won his fifth SAG Award as that show's leading actor in a comedy.
Modern Family took the best comedy ensemble cast award, while newcomer Boardwalk Empire won double honors, for leading actor in a dramatic series, Steve Buscemi, and for its ensemble cast.
The Good Wife star Julianna Margulies, recognized for her leading role in a drama, thanked her in-laws for producing "a superior person" in her husband, Keith Lieberthal.