I put games on my work system but it doesn't make me want to come to work! :p
In all actually, I just put them there incase I have to spend the night repairing a server or something. In actuallity though, when I have been here all night, I played with them for five minutes before dropping them. If a server is broken, the last thing it turns out that I want to do is play games while a database repairs or something. It probably has to do with the mood in that I really would rather being going home. Dunno.
I currently have Rome Total War installed along with Op Flashpoint, Dangerous Waters, and here is the funny ones - Indy's Desktop Adventures (good game to kill 5 min with) and I also have a clone of the original Bruce Lee for the Commodore 64!
-S