I've only finished BG2 SoA, HotU and Harry Potter so far
I was quite some way in BG1 but I quit it, installed it just some time ago. I also was pretty far in SoU, Caesar III, Commandos II, Commandos behind enemy lines, Civilization Call to Power, Empire Earth, Patrician, Age of Wonders, Police Quest SWAT 2, Hidden & Dangerous. I also have Europa Universalis but I didn't get far into it because it's so huge. I'd end up with so much to do and so little time I lost interest. But every now and again I feel like installing it and playing cause it's really fun.
Maybe I should buy some new games. New for me but they're pretty old now. I think I saw thief 1 and 2 for like $3.5 over here and commandos destination Berlin for about the same. But well I don't know how much I can miss now cause it seems it'll be a pretty expensive month(/s)