Total number of sidequests is around 70 (or at least from what I've heard over at Bioware's forum), so if you did all those in under 23 hours, plus the main quests, that's pretty impressive.
PC is no way to play Gears of War. The cover system was designed to be played with the 360 controller, I tried the PC version at a friends house and found it clunky and awkward.
Kaftan get Call of Duty 4!
me, llyranor, Kor, and Nick (he'll have his soon) all play. I don't know if jags has it but if he doesn't, he should get it too.