Crisitunity analyzes who flipped by caucus. Here are my stats. My original caucus breakout is here, though it's slightly different than Crisitunity's and based on this spreadsheet.
CBC 69.7% (30-8)
New Democrats 79.3% (46-12)
Blue Dogs 63.8% (30-17)
Progressive Caucus 69.4% (50-17)
Basically, this was a caucus wide vote, with New Democrats leading the way. The Blue Dogs have the most swing members who were allowed to vote 'no'. The Progressives and the CBC really flipped on this vote, probably because of heavy lobbying from Obama himself. Meanwhile, on the right, the Republican Study Committee stayed mostly against the bill. The GOP leadership is basically powerless at this point.
Obama pushed Congress hard on this. It's his bailout now, my friends. Let's hope it works.
Update: Here's Will Roger's delivering a Colbert-like Roast to bankers in 1924. Really funny, and timely.