Johnny Galecki and Kunal Nayyar in The Big Bang Theory (2007)

Kaley Cuoco in The Big Bang Theory (2007)

Jim Parsons in The Big Bang Theory (2007)

Johnny Galecki, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)

Johnny Galecki in The Big Bang Theory (2007)

Kevin Sussman in The Big Bang Theory (2007)

Brian Posehn, Kevin Sussman, and Kunal Nayyar in The Big Bang Theory (2007)

Simon Helberg, Brian Posehn, and Melissa Rauch in The Big Bang Theory (2007)

Simon Helberg in The Big Bang Theory (2007)

Brian Posehn and Kevin Sussman in The Big Bang Theory (2007)

Mayim Bialik and Jim Parsons in The Big Bang Theory (2007)

Kunal Nayyar and Rati Gupta in The Big Bang Theory (2007)

Mayim Bialik in The Big Bang Theory (2007)

Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, and Melissa Rauch in The Big Bang Theory (2007)

Simon Helberg and Melissa Rauch in The Big Bang Theory (2007)

Kaley Cuoco and Johnny Galecki in The Big Bang Theory (2007)

Brian Posehn, Kunal Nayyar, and Rati Gupta in The Big Bang Theory (2007)

Simon Helberg and Jim Parsons in The Big Bang Theory (2007)

Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)

Brian Posehn, Kevin Sussman, and Melissa Rauch in The Big Bang Theory (2007)

Johnny Galecki, Kunal Nayyar, and Rati Gupta in The Big Bang Theory (2007)

Brian Posehn, Melissa Rauch, Kunal Nayyar, and Rati Gupta in The Big Bang Theory (2007)

Kevin Sussman, Kunal Nayyar, and Rati Gupta in The Big Bang Theory (2007)