Special episode featuring the cast of
Dallas (1978), but which also served as a reunion of sorts for series star
Larry Hagman, who 15 years earlier had co-starred with "Squares" host
Peter Marshall in two films,
Ensign Pulver (1964) and
The Cavern (1964), and had over a decade before this broadcast worked with center square
Paul Lynde in three episodes of
I Dream of Jeannie (1965).