I've tried playing Half-Life and Half-Life 2, but simply can't. I just get motion sickness, which I somehow don't get playing Halo, Gears of War or even Call of Duty 4. Still, I love the premise of the game, and The Purchase Brothers do an amazing job making a mini-series out of it.
Looking forward to Part Two.
[Sat morning: This post should have gone up last evening, but somehow I screwed-up the schedule]