I saw a news blooper where a male news anchor fell back in his chair, and it was revealed that he had NO pants on. Only boxers.
I can top that...there was one occasion on The Tonight Show where Carson was doing a Shirley Temple bit...he flounced his skirt, and the first few rows got a nice peek, if you know what I mean. :-D
Chuck Donegan (The Illustrious "Chuckie Baby")