The following is a clip from the syndicated version of the CBS game show What’s My Line?. In the show, celebrity panelists were blindfolded and asked guests questions to determine their occupations. At the end of the show, a “mystery guest” is brought on stage and the panel must determine the identity of the guest. Comedian George Carlin acts as the mystery guest in the clip. If you are used Carlin as a cantankerous old man, this appearance may surprise you.