Thomas Schiff (Played by David Dastmalchian) from The Dark Knight wins my vote for best bit part this year. (He’s the guy who was dressed as a cop with the Joker.)
Has two scenes in the entire film, but his short creepy laugh and smile make him really lovable.
I love him. I wish he had more screen time and I finally find myself a big fan of someone with like two minutes of screentime. 
I’ll try and take some screenshots later.
