This season's movie with momentum is crowd-pleaser "Argo, " which has been building steam with big prizes at ceremonies such as the Golden Globes, the ProducersGuild and the Directors GuildofAmericaAwards.
The SAG cast win came a day after "Argo" claimed the top honor from the ProducersGuildofAmerica, whose winner often goes on to claim best picture at the Academy Awards.
Argo has emerged as the best picture favourite at the Academy Awards, after scooping the top prize at the Baftas and Golden Globes, in addition to awards from the Directors GuildofAmerica, the Screen Actors Guild and the ProducersGuildofAmerica.