I saw Thayer David's appearance on Rockford Files when TV Land aired it recently. It's a great little scene, and very different from his other work.
I recommend the episode of Rockford in which Dennis Patrick and Dana Elcar appeared, if you enjoyed their work on DS; they both play characters a lot like Jason and Sherrif Patterson, though the writing isn't as good as what they were given on DS. Still fun to see. Dennis looked very distinguished, and Dana looked a lot healthier than he did on DS--that healthy California lifestyle no doubt!
Gothick