3. Tommy Heinsohn
Years in the Booth: 1966-Present
Networks: WKGB, CBS, CSN New England
Tommy Heinsohn calls Celtics games with an amazing concoction of incredible bias, and "I don't give a fuck because I'm old" attitude. He also sounds like he's drunk half the time. He's crazy in all the right ways and has been manning the airwaves since 1966 with his ridiculousness. "NBA: It's stupid."