IGN - for reviews and hands-on impressions
1UP - same as IGN
N4G - It has mostly all the news, rumors, previews, reviews, impressions, etc. from different websites submitted on this very website. The main page is pretty terrible since it's infested with PS3/360 fanboys, but it's pretty funny reading their flame wars. They'll argue over the smallest things. It's fun trolling there.
And of course VGChartz.