From yesterday's broadcast (via Fox and Friends this morning):

"I really hope it's Biden. You don't want to say that too loud, but I really do hope that it's Joe Biden, because we've got a mountain of archival audio on Joe Biden. Plus the arrogance factor times two. Biden and the messiah would be just delicious."

If you want to know what Rush is talking about, Jim Geraghty has compiled a fairly comprehensive list of Biden quotes that might come back to haunt an Obama-Biden ticket.

Look, Biden is an easy target, but I think if you ask conservatives who of all the possible options for Obama they would feel the most comfortable with Joe Biden would top that list. He's a verbal gaffe machine, but that's also part of his charm in a way. And although a partisan with few equals, Biden is a serious guy when it comes to foreign-policy matters.