To rank the Baldwin brothers would go a little like this (reasons are included):
1. Alec - He's got the best career by far, and he was the first to join the biz. Revitalized by "30 Rock" (along with Tracy Morgan) and popularizing Tina Fey and Jack McBrier throughout the past few years, he's become an icon of TV and made it back to the big screen. Easily the most handsome Baldwin.
Pros: "30 Rock", "The Departed", "Outside Providence", "Royal Tenenbaums", and "Along Came Polly"
Cons: Appearances on "Will & Grace"
2. Stephen - "Bio-Dome" and "The Usual Suspects". That's enough to solidify second.
Cons: Reality TV. "The Celebrity Apprentice","Celebrity Big Brother", etc.
Wild Card: "Ty Murray's Celebrity Bull-Riding Challenge"
3. Daniel - The cocaine addicted Baldwin brother. Yep, it's Daniel who plays with the nose-candy, not Billy. Neither of them are very worthy, but Daniel is better known....purely because of his cocaine addiction.
Pros: He was in a movie called "Sidekick" which makes me think of the Chuck Norris thrillride "Sidekicks". Always good to be associated with that movie.
Cons: That whole cocaine thing...
4. Billy - The silent Baldwin and by far the ugliest. He was considered for the role of Batman in "Batman Forever" but was eventually beat out by......Val Kilmer? (If he had landed that role, he would have landed above Daniel on this list, poor guy).
Pros: "The Squid and The Whale", "Gossip Girl", "Dirty Sexy Money", "Fair Game" with Cindy Crawford.
Cons: Constantly confused with cocaine-addicted brother "Daniel." Was denied the role of Batman.