Senator John McCain got a moment in the spotlight recently when he filmed a cameo for '24'. It'll be a real "blink and you miss him" moment - Audrey asks for a file and McCain hands it to her.
Only seconds onscreen, but it has an interesting ramification for Toobworld. It means that in the alternate dimension where '24' takes place (different from Earth Prime-Time because it has had 3 different Presidents in a world where Bush wasn't the Commander-In-Chief), John McCain pursued a different path in Life. Instead of going into politics and becoming the senator from Arizona, McCain entered government service and joined the Counter Terrorism Unit.
It's a small ripple in the pond, but think of how other real life personalities might have had their lives altered in that alternate universe. Anna Nichole Smith might become a nun; Donald Trump could have been a grocery store bagboy; and how about Pauly Shore as a congressional representative from New York?
No wonder '24' is such a thriller. That dimension is a scary place!