4. Guest Star Dick Van Dyke (1979)

Guest Dick Van Dyke haggles with writers over sketches while Mary worries about a brush fire that's edging dangerously close to her house. In fantasy bits, Dick and Mary reprise their Rob and Laura Petrie roles playing the couple in their later years; and do a ""walking"" medley.-TV Guide March 24-30, 1979

Release date: 1979-03-25