If you you tube "best crank call ever", there is a radio station that has a guy pretend he's a cop investigating a murder when he sees a tellemarketer's number on the id.
IT IS HILLARIOUS !!!!!!
I'm not posting a link here for a few reasons because some of his statements may be taken as polititcal, even though they're not. Funnies crank call I've ever heard and this guy is GREAT !!!!