Beasties/GoldieBlox debunked

Andy Baio's laid out a great legal analysis of the Beastie Boys/GoldieBlox kerfuffle. It's a must read, especially if you think that "ads can't be fair use" or "last wills carry more legal weight than fair use" or even "if GoldieBlox's video is fair use, then all advertisers will be able to use any song for free."