He most certainly is.

I also forgot to mention Tazuna (played by Sparky Thorton). I'd say he fits the role pretty well. I was expecting a Saito/Jin voice from him - like he's done in other roles, but he's going for the cooky-old-guy voice. Which is cool 'cause it fits. His acting has no problems that I can see so far.
sasukes acting seemed a little forced again
lol, especially during Sasuke's "I'm gonna kill myself" monologue. Ah well, at least the voice fits him.