Slumdog Millionaire continued its winning ways: earning the Screen Actors Guild Award for best cast of a motion picture on Sunday night in Los Angeles. The win follows top honors at the Golden Globes and the Producers Guild Awards. Sean Penn won the lead-actor award for his portrayal of slain gay-rights leader Harvey Milk in Milk, and Meryl Streep took home the best actress award for her role in Doubt. On the television side, 30 Rock earned nods for comedy series cast, Alec Baldwin and Tina Fey. TV drama honors went to the cast of Mad Men. (Photo: WENN)