More What's My Line?

So, when you turn on a game show, no doubt one of the kind of contestants you expect to see would be...oh, say James Cagney.  Here he is as the Mystery Guest on What's My Line?  The treat here is the great ease he shows as a contestant and the comfort of putting on a voice.  As a result of it all, the panel surprisingly has a hard time guessing one of the all-time great film legends.  Notable too is that one of the panelists is novelist Gore Vidal.

https://www.youtube.com/watch?v=l6wxev89L-o