I recently came across an actor who I didn't realise I'd already seen in a
very different role.
I've been watching episodes of the light-hearted US detective series "Monk" recently and Googled the name of the actor who plays Captain Stottlemeyer. He's apparently also known for having played Buffalo Bill in Silence of the Lambs! That's a film I've only seen once and don't plan ever to watch again, not because it's a bad film but because it was so mind-searingly memorable and far too creepy and disturbing for my taste.
en.wikipedia.org/wiki/Ted_Levine
Can you think of any other actors/actresses you've seen in surprisingly different roles?