Gametrailers is so fucking awesome. It's the only videogame website I go to other than the forums (GAF, here). It's everything I expected something like G4 to be but way better because it's interactive. I love how they are quick getting the latest media up too.
I just don't get how Gametrailers can be so far ahead of the competition when they seemingly came out of nowhere. 6 months ago, I had no idea the site even existed. 1up/1upshow, EGM, G4, Gamespot, IGN... all those things are lame as fuck and make me feel like a fucking distinguished mentally-challenged fellow for liking videogames. Gametrailers somehow manages to outclass them all and not come off as jaded, condescending, sarcastic, stupid or downright embarrasing. That's another thing too, it's easy to use. Quicktime and Windows media formats (I use both Mac and PC) and they don't try to force some lame subscription service on you like other videogame sites that offer comparable content (IGN, Gamespot).
They aren't perfect but fuck if I know of any other videogame related publication that's better.