live TV goofs
There was normal everyday stuff: people looking at the wrong camera, lights and mikes not being turned on. Then there are famous ones I've heard about:
Captain Video desperately fighting the villain while, in the background, a stage hand is sweeping up. (Sid Caesar made fun of this by playing a stage hand sweeping between the actors and the camera.)
Jackie Gleason said "and away we go" and slipped and broke his leg.
Dagmar plopped more on the desk than the audience expected. (Costume Malfunction)
There's a story about Bob Hope holding something with both hands and asking the Blonde to reach into his pocket to get his car keys. She tried and said "this feels crazy" and Bob said "+++++++++++".
All things considered, it didn't happen too often. Nothing to compare with Uncle Don on the radio saying "there, that oughta hold the little ********s 'til next week".