Mistaken identity: John McCain and Joe the Plumber

First... the Obama campaign made quick work of McCain's statement last night that he isn't George Bush:

(Video link)

And then there are these facts about McCain's favorite plumber, Joe:

• Joe isn't this guy's real name, it's Samuel Wurzelbacher.
• Joe Sam is not currently licensed nor has he ever been licensed as a plumber.
• Joe Sam owes back taxes.
• Joe Sam is related to the brother-in-law of savings and loan crook Charles Keating.
• Joe Sam apparently isn't sure he's going to buy a plumbing business and wouldn't see his taxes go under Obama's plan even if he did.