Why is this not stickied?!
Oh and since more 'popular' people are in the list now anyway, I'll just repost my earlier suggestion:
Haatfilms | Occupation: Let's Plays | Channel: http://www.youtube.com/haatfilms
One of the very, very few Lets Plays that even I enjoy. Three pretty hilarious guys that tend to do some interesting things lets play-wise while still putting quite a bit of post editing effort in it.