T2K uses GDW's patented "confuse-a-tron" house system (see also Traveller for more details), which is simultaneously very cool and very much a pain. It's got neat ideas for character development, in the way of Careers and pre-developing a character's history, but the system itself is obviously written FOR engineers BY engineers, and heaven help you if you can't do a square root or just don't like math.
Once again, I expect I might enjoy the game -- nowadays I hear it is being rereleased, or something, and has a largish following -- if I were to play it today. At the time I played it, it didn't hold a lot of excitement for me.
Note! Despite the roughly once-a-month emails I receive with requests along these lines, I do not have a copy of T2000, I don't know where to get a copy, and no, I'm not referring to the computer game here.
Followup Note! (April 2004)
Despite the roughly once-every-three-months emails I receive, I'm not really interested in getting my hands on a copy of T2000, nor in fact in actually playing it. Thanks for the suggestions and support, though.