Right now, I'm playing the "Lets visit every sex shop on Yonge street while I'm in Toronto" game...
But while I'm burning time waiting for the airbus to land at Pearson, I dust off the old school Final Fantasy VII PC version. Nothin' like the classics.
I did recently try Doom 3. Made it through once and I doubt I'll bother with it again until the modders get a hold of it and turn it into something useful. Anxiously awaiting Half-Life 2 and GTA:San Andreas.