Nice list. Four of those are in my top ten (the odd one out here is Guild Wars 2. I tried it. It was my first MMO. I hated it).
But yeah, Mark of the Ninja is fantastic. It's my Game of the Year. Tribes is also great. I love the mobility. I'm always running around, getting into intense skirmishes, and I almost NEVER get sniped. That's wonderful. Nothing bums me out more than getting instakilled by some jackass sitting across the map with a sniper rifle.