Well, here is what I like to use,

Everquest
X-Wing vs TIE Fighter,
Quake III
Diablo II
Age of Empires II
X-Wing Alliance
NASCAR 2000
NHL 2000
Rollercoaster Tycooon
You Don't Know Jack series
Microsoft's The Zone


Oh wait, you meant at work. Oh well the only thing that I really use is Ghost. That is the only thing that we are allowed to use. We use NT across the board formated in NTFS, so there goes the good ol DOS utilities. If a pc has trouble, Ghost it. Frickin stupid if you ask me, but I am not "Management". If I was, my place of employment would probably run better. At least in own little world anyway.