Sparkly Bites: The Actors whose Names you probably don't know

You've most likely seen them in more movies than you've had hot dinners. You probably even quite like them. But for some reason, you will never remember their names. This is something that I've always found, and I've decided it's time to put an end to it once and for all.

Here are some examples:
#1You know...Juno's dad.
Beneath that thumbs-up lies a career-long grude of unrecognition.

This is J.K Simmons.

#2
"Him, on the left" doesn't count.Neither does "Titanic submarine guy with earring."

This is Bill Paxton.

These are all the ones I can think of. Which actors do you know, but simply not their names?