 During the filming of one episode, Lorne Greene was required to jump  off a small ledge into a lake five feet below. Michael Landon later  recalled that when Greene did the stunt, he jumped into the water  feet first and went completely under, but his hair piece came off  and floated on the surface of the lake. Landon and the rest of the  crew watched to see what would happen. After a short while, Greenes  hand shot up out of the water, grabbed the hair piece, and pulled it  down. Greene emerged from the lake, wearing his hair piece slightly  askew. He walked nonchalantly past the snickering crew, and went  into his trailer without saying a word.