Hey Guys!
I grabbed this from a slashdot article. I know quite a few of you run linux, and this was just too cool to pass up. Check it out! The guy gives you step-by-step instructions for loading a DOS emulator that will let you run doom, quakte and all the other fun dos games of old!
http://www.preshweb.co.uk/linux/howtos/dos/
NOTE: By the time I got there (12:30 PM) he had already had so much traffic that he had to eliminate the URLs to download the games from his server. You can still find them on google, though, and they are all PUBLIC DOMAIN! That means FREE!!!