http://sc2.sourceforge.net/screenshots.html
Woooooohoooo! The game that stole years of my life has been made open source -- and it's being ported to modern PCs! If you've never played StarCon 2 (Now known as The Urquan Masters) before, do it. Now.
This time around, you won't need to worry about bootdisks, memory managers, funky SB emulation, or anything! Probably one of the best open source games out there, thanks to the release of the code!
On a related note, the site below has a clone of the melee mode - with multiplayer network play option!
http://timewarp.sourceforge.net/