RHCP was pretty good. Pretty much played all of their radio hits, plus a couple of songs from what I assume would have been their latest album (or just songs I'd never heard).
I won't say that I've been the biggest RHCP fan, but I appreciated that they could play all of their songs live. Flea and their guitarist (Josh Klinghoffer?) were pretty amazing, to the point where I could have just listened to them riff while Will Ferrell played drums.
Notable:
Will Ferrell and Chad Smith look strangely alike
Ended the show with a three-song encore, one of which was "Give It Away Now," which is pretty much what I wanted to hear. I wasn't disappointed.