That was funny :0) I loved the bit where he said "I've got an angel and you haven't, na-na-na-na-na". And when he said to the guy that while he was slitting his throat he'd give him a hug, because he was so angry. Brilliant.
The guy sounds like a pretty nasty peice of work though. I hope the police do more than just have a word. I'd send the tape to the guy's employer too.