Ah, retro gaming, taking me back to my Commadore 64 days. With games like Impossible Mission, The Movie Monster Game, Racing Destruction Set, Larry Bird vs Dr J, Snokie, Pitfall, Ghosts n Goblins, Archon: The Light and the Dark (the best battle chess game evah), and Raid over Moscow. Along with hundreds others; loved that system back in the day.
Oh, and Beach-head! Between that and Raid over Moscow, I "lost" tons of hours of my childhood.
As far as playing these games, though, I'm with Lex. I don't enjoy going back save for the 2 or 3 minutes of nostalgia. Even games like Goldeneye or the FF series I can't go back and play; although part of that is I just don't have time.