Go to the 'Scene Selections' for the following episodes

Disc 1: The Great Petrie Fortune
Disc 2: You're Under Arrest
Disc 3: Bad Reception in Albany
Disc 5: "The Man from my Uncle" and "The Gunslinger"

Highlight 'Opening Titles' and press LEFT. Dick's head will illuminate. 
Press ENTER and you will see some commercials for "Nick at Nite" 
featuring Dick Van Dyke.