Fenixp: Yeah, tell us what games you like, what genres you enjoy etc., otherwise this is just going to turn into a massive 'favourite games' list. Also do keep in mind that people here very much are nostalgic, so our view of these games could be slightly ... Non-objective.
Good point. Ive avoided limiting to a certain genre, because "classic" to me means a game that defies genre expectations/limitations. For example, lots of people love Star Fox 64, but arent fans of any other space shooters. Im just hoping to see a few games that occur on multiple peoples lists.
Baldur's gate (not Baulder Im told) is a recurring game, so thats got my attention... Thief series seems to come up alot too...
As for the nostalgia factor, all I can say is, try to shelf it when you give recommendations. If its possible anyway (probably isnt).