Yes, but Coltrane is capable of much more than comic relief. Hence my mention of "Cracker."
Another possibility:
Samuel le Bihan? He was brutal, and honourable, and magnificent, in "Le Pacte des Loups." He's not a huge guy per se (height-wise), but he certainly has gravitas.
Stephen Fry is a big guy (people forget how big he actually is) with enormous range. He might seem too genteel, but he can do it. Random trivia: My boyfriend's dad broke Fry's nose in a rugby match! Which is truly hilarious, because he's half Fry's size!
