If you don't watch Son's of Anarchy you definitely know him from Hellboy.
But what cemented this post for me was Sunday morning. I switched on the TV and there he was in Blade 2. So it got me thinking just how many movies was this guy in. Just take a look at his resume over at IMDb . The list is too long to go into. Voice work for Fallout, Teen Titans etc. I was impressed and on top of that, imagine my surprise when I found out that he played Vincent opposite Linda Hamilton in "Beauty and The beast."
With Perlman I forget he's an actor and I focus on the character so much so it takes me seeing the film a couple of times to realize it's him.
So my question to you is this: Is there an actor that makes you forget that he/she is playing a character, to the point where you're surprised later to find out you were watching that actor all along?