When searching "Review" in Youtube, the first video to pop up is, our very own, Jeff Gerstmann's review of Kane and Lynch from when he used to be an editor for Gamespot. Although it is not the highest viewed review on Youtube (I would guess that dude with the 70 min review of Star Wars Ep. 1 has that), I am still very surprised to see how popular that event was. 
 
Try it for yourself.