Johnny Galecki and Kaley Cuoco host a retrospective look at The Big Bang Theory (2007), sharing backstage secrets, unforgettable clips, personal memories, favorite moments and tours of the iconic sets.
| Actor | Role |
|---|---|
 Kaley CuocoSelf - Host | Self - Host |
 Johnny GaleckiSelf - Host | Self - Host |
 Jim ParsonsSelf (archive footage) | Self (archive footage) |
 Simon HelbergSelf (archive footage) | Self (archive footage) |
 Kunal NayyarSelf (archive footage) | Self (archive footage) |
 Melissa RauchSelf (archive footage) | Self (archive footage) |
 Mayim BialikSelf (archive footage) | Self (archive footage) |