I really hate the ones where people try to act like wrestlers or celebrties. A few years back, I had a friend who had Booker T's entrance music in the background and him saying:
"Yo, dis is the 5 time WCW Champion, leave a message suckaaaaaaaaa!"
That was pretty bad, but the worst goes to:
"Hey, you know the drill, holla one, peace in the middle east!"