Planescape Torment is definitely a must have, its worth it for the soundtrack alone. Actually so is Beyond Good & Evil

Freespace 1 & 2 if you have a joystick (be sure to get the FS2open mod to make it all super pretty)

Prince Of Persia The Sands Of Time is amazing too, also has a top soundtrack

I think yopu have to go through the first run setup thing when you move steam games to another machine don't you?

Omg, it is lol.

every one talks about games that cost 60$ but if you wait for a while the cost drops to 20$
for example left 4 dead 2,Mass effect 2 and 1

Every thing changes,new stuff puts old in shelfs and bam discount
i actually bought mass effect for about 5 $ on steam
And i got Witcher as a gift from gog user orcishgames <--- thank you !

so you dont need to pay 60$ for a game think about better use for that 60$ of yours
theres allot of old classics(from GOG) and indie games that cost way less