Check out this link

[markas214]

http://www.shockfamily.net/skeleton/...uscle=Masseter

I see alot of people at the gym who like to work the masseter muscle constantly.
Seriously though this is a good site to reference muscle groups.

[Rhino58]

Good post bro. Yeah people are always talking and not lifting. Then they distract me. Takes me forever to lift. Maybe i need a new gym.

[KeyMastur]

Not bad, but it doesn't really tell you how to work out the muscle.

On the other hand, this one does :

http://www.exrx.net/Exercise.html