It's always a little frustrating when you think that you have a really clever and original idea only to discover that someone else already thought of it...five years ago.
For ages I've had a Saddam Hussein punching puppet in the basement lying next to an old WWF toy wrestling ring. Not too long ago I was staring at them and thought "hmmm...now there's an idea for a quick little throwaway film", but it turns out that Paul Andrejco got there first back in 1999 with his short film Last Rites.