Back in the day (early 90's), we used to send "Mail Bombs" to these jokers. Basically you'd take a large video data file, like say, the SuperBowl, and UUEncode it into text. The text file would be dumped into an email, and then rapid-fired at the spammer's email address about 100 times. This would nuke the receiver's email server.
Unfortunately, now they all use bogus addresses
