Johnny Galecki and Jim Parsons in Pilot (2007)

Kaley Cuoco and Simon Helberg in Pilot (2007)

Kaley Cuoco, Johnny Galecki, and Jim Parsons in Pilot (2007)

Kaley Cuoco and Jim Parsons in Pilot (2007)

Kaley Cuoco and Johnny Galecki in Pilot (2007)

Johnny Galecki, Vernee Watson, and Jim Parsons in Pilot (2007)

Kaley Cuoco, Simon Helberg, and Kunal Nayyar in Pilot (2007)

Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in Pilot (2007)

Simon Helberg and Kunal Nayyar in Pilot (2007)

Kaley Cuoco and Kunal Nayyar in Pilot (2007)

Johnny Galecki, Brian Patrick Wade, and Jim Parsons in Pilot (2007)