Video: What's My Line? - Groucho returns to the Panel! - Anne Bancroft (Nov 15, 1964)

And finally, 5 full YEARS after his first appearance on the WML panel demolishing the whole format, the producers dared to have him back on the panel again.

MYSTERY GUEST: Anne Bancroft PANEL: Arlene Francis, Groucho Marx, Dorothy Kilgallen, Bennett Cerf

NOTE: There was no WML broadcast on Nov 1, 1964, and the Nov 8, 1964 show with Robert Goulet as mystery guest is thought to be lost. The Oct 25th 1964 show with James Garner was posted earlier this year in tribute after his passing: It can be found here: https://www.youtube.com/watch?v=U_3Q37kVY4I

Groucho's first WML panel appearance in 1959-- by FAR the most popular video on this channel: https://www.youtube.com/watch?v=p6wxrLjJobM

Groucho returns to WML as mystery guest in 1963: https://www.youtube.com/watch?v=n_NzXFs3Rqg

Groucho returns one last time as mystery guest in 1967: https://www.youtube.com/watch?v=D-tjOOxcUyU

For more rare videos of the Marx Brothers and other legenedary comedians like the Jack Benny, Fred Allen and Burns & Allen, please visit the Vintage Comedy Vault channel at http://www.youtube.com/channel/UCjWdqgoTj2_K8gnLmJK4i7g

Marx Bros. rare video playlist: http://www.youtube.com/watch?v=6Dl82KsITPI&list=PLvfCPBLpeglWf4_VTa9jPU7x2TTCzTopB

Groucho Marx on You Bet Your Life: https://www.youtube.com/channel/UCUIbTdEI7D1AMyLATIdKq5w