These are, I kid you not, 3 hour speed paintings done by an amateur on the Conceptart.org forums. Prepare yourself, these are incredible. The second I saw them my jaw hit the floor and I just about screamed when I read that they were speed paintings that he did on his SPARE TIME. Check out the forum here, and the thread here. Here's an entire thread 150 pages long full of nothing but speed paintings.
*EDIT* Okay it turns out that Blogger is stupid and won't resize to allow the full width of these pictures to be seen so I'll just link them here.
Colossus, Beast, Iceman
Carnage (seriously, holy crap on this one)
Thor, Iron Man
Venom (DANG!!)
Wolverine VS Hulk (scary, but so awesome!)
