The good folks at AmericaBlog have compiled a "three minute oppo research review" of Paul Ryan that's worth bookmarking. The page also links to a detailed analysis of Ryan from America's Bridge.
Mitt Romney's campaign team is panicked, and rushed the announcement of his VP pick — on a weekend, mind you, when all but political junkies are following the news — in a desperate attempt at "game change." The choice of Ryan will lose Florida for Romney, and it's hard to see how Ryan does anything except consolidate the austerity/social conservative wing of the GOP and maybe (emphasis on maybe) fend off chicanery by the Ron Paul wing of the party at the Republican Convention.