I just played the original Deus Ex a few days ago. I really liked it! I feel it was at least as good as Half-Life 2, even with the graphics being much worse. The main problem I had with the game, in fact, was that it was too long
... my finger started getting sore shooting so many things!
Thanks to the stoffe for the recommendation. She also made me get VtM: Bloodlines, so this just goes to show that if the stoffe recommends something, you won't be disappointed!