Dore Schary was scheduled to play himself but he fell ill. Philip Ober, then-husband of Vivian Vance, stepped in.
While trying to hide his identity from Lucy and Ethel, Schary says his name is George Spelvin. This got a laugh from some of the audience members, because "George Spelvin" is a name used in theater to represent when one person is assuming another role.
While posing as Ricky's fan club bobbysoxers, Lucy plays the ukulele. The DVD calls this "Lucy's Ukulele Song."