Merv Griffin's guests are Montgomery Clift and Don Adams.
Note: In Merv Griffin's 1980 Autobiography "MERV" he states:
"Of all the remarkable guests on my NBC talk show, one appearance remains in my mind as the most memorable, Montgomery Clift." He did very few televisions interviews in his life, and arrived at the studio, intoxicated, while Griffin was already on the air. However, when Merv introduced him, Clift walked on stage like he had pushed a button inside his brain that brought self-control. Montgomery Clift gave Merv Griffin, that afternoon, a lucid, fascinating interview including anecdotes about his relationship with Marilyn Monroe. By the end of the interview they both shook hands. Monty waved to the audience and strode offstage...collapsing against a wall the moment he was off camera.