IGN and Metacritic as well!

ign and gamespot just to see what they think. but i buy a game regardless of what score it gets. if i want it, i buy it. that simple.

Gamerankings - for average and to click through to a couple of other reviews

Metacritic - for average and to click through to a couple of other reviews

Gamespot - occasionally

IGN as it's the most balanced out there. Not HD biased like Gamespot.

Also Gamerankings

Playfrance.com, Gameblog.fr (I'm french)
IGN (I can read english)

Gametrailers
IGN
Gamespot
Edge/Eurogamer(whichever comes first)
Xplay

Those have the most "important" scores in the business, so those are the ones that I look forward to when a new game comes out.

I exclude any site that uses freakin' alphabet letters. I hate that. I don't care how well the review is written.

I use multiple sites and magazines but then I wait for when I get a chance to play the game to make a final call. A bad review sometimes comes out of the review editor just sucking at the game or a bias or whatnot.

I read a lot of reviews, my favorites to read are IGN and Destructoid... I hate scores.

IGN only. I dont bother with any other site since I dont really care for reviews.
If IGN gives it a good rating fine. If it doesnt fine. I go by my own personal opinion in the end

No amount of bad reviews will stop me from buying Bikinie Zombie Slayers!!!

I use Gametrailers because they do a nice video review, you get a nice chance to hear about the game and see what they are talking about at the same time. But i don't use their score and any sites score to judge game.