The folks at Gamerz-Edge have written up their own review of Titan Quest, giving THQ and Iron Lore's action RPG an overall score of 9.2/10.
Iron Lore and THQ have a great game on their hands here. I wish it came a bit more polished out of box, however since its release there have been three or four significant patches released that fix a variety of issues. Given how easy it is to update the game and how it doesn't effect your character (as far as I know), this is forgivable but a bit disappointing nonetheless. That said, Titan Quest has been a wonderfully enjoyable experience for me since I started playing about two weeks ago. I strongly recommend this game to any gamer that is looking for a solid RPG experience.