See the 'Big Bang Theory' Cast at the Emotional Final Episode Taping (PHOTOS)

Meredith Jacobs

The Big Bang Theory may make its viewers laugh every week, but saying goodbye to the series had its cast in tears.

The stars of the CBS comedy, which will air its one-hour series finale on May 16, posted photos of and reactions to mark the filming of the final episode Tuesday, April 30.

'The Big Bang Theory' Cast Reflects on Their 12-Year Run Ahead of the Big Farewell

'The Big Bang Theory' Cast Reflects on Their 12-Year Run Ahead of the Big Farewell

Johnny Galecki, Kaley Cuoco, and more talk the series' beginnings, fandom, catchphrases, guest stars, and more.

They had previously done the same after the final table read. In doing so, they shared memories and their emotional states, said goodbye, and thanked their fans.

Click through the gallery above to see photos from Jim Parsons, Kaley Cuoco, Johnny Galecki, Kunal Nayyar, Mayim Bialik, Melissa Rauch, and Kevin Sussman.

CBS Announces 'The Big Bang Theory' Retrospective Following the Series Finale

CBS Announces 'The Big Bang Theory' Retrospective Following the Series Finale

Go behind the scenes of the comedy series after its finale.

The Big Bang Theory, Thursdays, 8/7c, CBS