Yes he is!
Worshipped in geek circles (deservedly so) for his great voice work as the Dark Knight in several animated series and films, it's interesting to see the man behind the voice, especially in other work.
Here he is on the drama Matlock.
Here he is again in a rare comedic turn on Murphy Brown. Quite a different approach than what is needed for the Caped Crusader!
Batman and Murphy Brown--that's a Brave and the Bold team-up right there!