I'm sure everyone at one point or another has received an email from a "419" scammer. Generally these spam emails say something along the lines of "we have $25 million in an off shore bank account and for some reason or another can't get it out unless we get someone else to send $25,000 to so and so. If you do this for us we will give you a 5% cut of the $25 million."
I came across this website -
http://www.419eater.com/index.htm - which is basically a community of people who "scam the scammers". The reply to these emails and make the scammers believe that they might consider sending the money. They create these elaborate stories, stringing the scammers along, and get them to do things like send them ridiculous pictures of themselves, get stupid tattoos, and generally waste their time.
The letters section is really quite hilarious. It's funny to see these scam artists falling for such ridiculous stories, all because of their greed. I encourage everyone to check it out.