David Lloyd is the father of Christopher Lloyd, executive producer of "Frasier".
David Lloyd wrote for "The Mary Tyler Moore Show" and "The Tonight Show" and is also known as a "punch up" guy (creative consultant). Not because he's violent, but because he would come into the studios for "Taxi" and then "Cheers" a few days a week to provide some jokes for the scripts.
When "Frasier" began, he continued with this job,serving as a creative consultant for the hit show 11 year run, and also wrote a few episodes as well. Despite what you may think, both Lloyds are happy with working together. "He's really good at what he does," Chris has said.