Adam West, who played Batman in the 1966 TV series. His straight-faced, straight-laced portrayal was hysterically funny.
One thing that I remember: Bruce Wayne (aka Batman) was escorting a date to her apartment. She said, "Want to come in for some milk and cookies?" Wayne replied, "Did you say milk and cookies?" And then, in an aside to the audience, he said, "Man does not live by crime-fighting alone."