David Krumholtz.
Oscar Isaac also has a passing resemblance to Jake Johnson (New girl, Lets be Cops)
Agreed-and when you add facial hair all three are really hard to tell apart.
I always thought they should all play brothers. They basically share a face amongst the three of them.
or al pacino.
That's it! I kept thinking a young Al Pacino. With Llewyn's attitude, I could visualize Al Pacino (in younger years). Good to see someone else thought this as well.
haha - I was thinking, "Wow, if I'd known that guy from Numb3rs was this talented I might have watched that show"
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The guy from the Santa Claus... haha I lol'd just imagining you watching the whole thing with that notion in your mind.