Watching the first season on DVD. Sometimes Desi would mouth other peoples lines. Also he must have been working pretty hard because in a few scenes the sweat stains under his arms were very prominant. He pretty much ran the whole show right?

Pretty much, yes! His contribution wasnt well-known for many years..... Lucy MADE it known, even after the divorce, she never lost her admiration for him.

She spent her whole life praising BOTH her husband's talents, but in Desi's case, the praise was justified in every way.