It's on CSPAN right now.
I caught the second half - it was okay. McCain demonstrated why he doesn't belong in the White House... Kyoto, global warming, kissing up to Democratcs. Giuliani did pretty poorly IMO. Huckabee had the usual one-liners and not much else (other than pushing for tax reform). It was close between Mitt and the Huckster, but I think Mitt came out on top.