I hate all the 'realistic shooters' out there. They are not fun, they do not feel real, and I find them to be more stressful than anything else. I love games like Tribes1/2/A and UT2K4 where you just go 1000 miles an hour with 32 of your 'friends' and go nuts. Not the prettiest games out there (Ascend really looks like ut2k4 with better textures), but man are they a ton of fun to play. Even if you suck at it you at least get a good show of the ragdoll physics which can be pretty fun
Reminds me of Quake 2 CTF where skill was required, not just spamming the map with grenades hoping to get lucky frags. I agree with caedenv. Realistic shooters are boring and clumsy. Give me something fast paced that takes practice!
T:A is a great game and the devs listen a ton to community feedback. I've been playing for a few months now and also started to play in the competitive scene. If you are a fan of UT/Quake or looking for a fun FPS to play that actually requires some skill you should definitely check it out...it is free after all!
T:A's success will all be hinged on whether it will be modable or not. Both Tribes1 and Tribes2 have endured to this day thanks to the awesome modding support Dynamix built into both games. Tribes Vengeance failed miserably because it lacked that support. So far the T:A devs have said it won't be moddable but here's hoping they become wise. And for those that might doubt the importance of modding, Counterstrike was originally a mod of Half Life =).