Angry Joe on youtube. I may not agree with some of his scores but he provides adequate information and shows actual problems about the game in his videos instead of just talking about it. After seeing his reviews I usually get the general idea of how the game is played and whether I will like it or not.
Jeremy Jahns, he's also a great movie reviewer. I pretty much just go on gamespot or ign for reviews. Sometimes Smoshgames too coz they're funny and most of their videos are entertaining. I want to try Angry Joe but his videos are so long and my internet sucks.