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While oldest bro Alec, an Oscar nominee and two-time Emmy winner, is arguably the best known and most successful of the Baldwin bros, his younger siblings haven't done too shabby themselves. William counts Backdraft and Dirty Sexy Money in his credits. And even though Daniel's got Homicide: Life on the Street under his belt and Stephen broke through in The Usual Suspects, they both have become pretty popular in the reality TV realm. Off-screen, the quartet bands together for their mother's charity, the Carol M. Baldwin Breast Cancer Research Fund.