Thief Review @ OCC
 

"In this state, if you enjoy games of this genre and can overlook the technical problems it has, I am very comfortable recommending the game. I cannot recommend Thief to anyone else at this time, though. If you cannot overlook the problems, then of course you should consider waiting to make a purchase. If you do not greatly enjoy this genre, but are willing to give it a try, this is not at the quality I would require to say you should give it a shot. I truly do hope this will change, just I cannot and should not speak to the future of a game, but to how it is now."

http://www.overclockersclub.com/reviews/thief_review/