If someone keeps playing the same role over and over is it safe to assume they just might actually be in character all the time? It's a short sighted game plan, but if you want to find work in the movies, being typecast just might do the trick. Meet Katie Sicking, the actress who plays only dead prostitutes, lying there, somehow getting insulted by other charaters in scene. As you can see, what the role lacks in dialogue, in makes up for with weirdly incredible versatility.
Also see: The Acting Reel of a Man Who Only Gets Shot in the Head