Here ("Obama supporters want refunds") and here (Joan Walsh) ("The divisive, self-aggrandizing right-wing evangelist was a terrible choice to give Obama's invocation") and here ("an overture to conservative Christians who rankles some Obama supporters"?) (grammar!) and here ("Barack Obama knows liberals are upset he picked the conservative evangelical preacher to pray at the inauguration. And he doesn't care.")
I frankly don't care. Obama is just being a politician here. And the only way he'll be able to get anything done -- and he has lots to do -- is to get everyone behind him, even the bigots.