Traxan

I rewatched 'Friday Night Lights' and he is absolutely amazing and more than a bit scary in this movie. Plus that ending. But he didn't really do much after that. Was he just not interested or did Hollywood not see past the cowboy hat?

Count Dooku

Despite his talent for it, his acting really seems like a hobby. It appears the films he's made either held some personal interest for him, or he had a pre-existing friendship with someone involved with the project.

Full-on adult male country music singer isn't the type that Hollywood would chase after to put in a starring vehicle, and if he wasn't interested in pursuing parts or developing projects, there you go..

Plus, the guy has a demanding and very successful career in music, a hot wife, a family, and a bunch of other interests. What does he need the movies for?

E Unit

The same with Dwight Yoakam. Although he's had a lot more roles, and he's really great in pretty much everything he's done. Red Rock West (although a small role), Sling Blade, The Newton Boys, just name a few. He was also pretty hilarious as the coked up doctor in Crank.