On The Big Bang Theory, while Penny (Kaley Cuoco) and Bernadette (Melissa Rauch) try to get Amy (Mayim Bialik) a new boyfriend, Amy’s ex Sheldon (Jim Parsons) and Penny’s new husband Leonard (Johnny Galecki) find themselves in a dilemma. They need more helium for an experiment. When they encounter a shortage of helium, the two scientists turn to a tough guy dealer in the black market.
The dealer is portrayed by Michael Rappaport. The native New Yorker is best known for his roles on Justified (Daryl Crowe Jr.), Prison Break (Don Self), My Name Is Earl (Frank), Boston Public (Danny Hanson), and Friends (Gary, Phoebe’s cop boyfriend). He also plays tough guys in the movies – Mighty Aphrodite and The Basketball Diaries, among others. Rappaport is currently playing the muscle in Edward Burns’ TV drama Public Morals. The Big Bang Theory airs Mondays at 8pm on CBS.