While on Frasier, David appeared in 4 public service announcements for NBC's The More You Know campaign. His topics were 'stay in school', 'school support', 'designated drivers', and 'parental involvement'.
David: Both my parents had a strong influence on my sense of humour and my ending up in this profession. They both had terrific and very different senses of humour. Mom had a very dry, deadpan sense of humour. My Dad has a very wet, anything-goes kind of humour. He tends toward the wild and crazy.
David: I was as happy doing theatre in New York for little or no money as I am now doing television for more money. The happiness, I guess, comes out of it being a good job. The success has to do with the fact that it's a good job that will continue.
David: (on his never seen wife on Frasier) There will always be a Maris, because she is such a great character. In fact, I think NBC should give her a spin-off show in which she never appears.