Michael Riedel has a nice article remembering Charles Nelson Reilly. A couple things it doesn't tell you about the man: Reilly was not only Dick Van Dyke's understudy in the original Broadway version of Bye Bye Birdie but Paul Lynde's, as well. In fact, he took over that part for a while when Mr. Lynde left the show, and it was one of those rare times when a replacement in a show generated a lot of buzz and many said he was better than the guy he replaced.
Reilly's audition for the role of Bud Frump in How to Succeed in Business Without Really Trying was an example of another thing that occurs from time to time in show business: The contrary casting notion. The way that works is that the folks casting the play or movie or TV show or whatever it is believe that the character is a fat brunette and they look and look at every fat brunette in the business and don't find what they want. Then a skinny blonde somehow gets an audition and is so wonderful that the producers and/or director decide the character is a skinny blonde. At the time Reilly auditioned, Bud Frump was supposed to be shorter than Robert Morse — which made the job hard to fill because Robert Morse was pretty short — and the character had other qualities that didn't correspond to Charles Nelson. But Morse got his friend Chuck the audition and Reilly was so funny that they changed the character to fit him. It's a tale often told by acting teachers in classes on How to Audition and the moral of it, which I'm not sure is always the best advice, is "Forget what they say they want. Just go out there and be wonderful."
Lastly, I'm also not sure I agree with Reilly's line about how once you do game shows, you can forget about a career in theater…and I'm not sure he meant it to be taken seriously. More often, the situation is that once an actor is making steady money off game shows, he or she doesn't want to do theater. If they do, the name recognition from the game shows will certainly help. It may not help on Broadway but a large part of Broadway is suspicious of anyone doing anything that isn't Broadway.
Thanks to James H. Burns for the link.