Gwen Verdon's dance partner in "Who's Got the Pain?" is Bob Fosse, who was restaging his stage choreography for the film, and took the opportunity to step into the number, which became a rare and treasured opportunity for Broadway fans to see the artist and his muse perform together. Verdon and Fosse married in 1960.
At the end of "Who's Got The Pain?," as Bob Fosse exits the stage into the wings, Tab Hunter congratulates him with an enthusiastic, "Great work, Fosse!" - using Bob Fosse's actual name.
In the 1960s, Jean Stapleton reprised her role as Sister Miller in a revival of the stage version of Damn Yankees, and drew the attention of producer Norman Lear, who immediately offered her for the role Edith Bunker in All in the Family (1971).
Tab Hunter and Gwen Verdon's duet of "Two Lost Souls" was captured live on the set during filming, with the intention of re-recording the vocals in post-production. However, the stars' on-set chemistry was so infectious -- and so in keeping with the freewheeling style of the number -- that director Stanley Donen ultimately decided to leave it as it was, Hunter and Verdon's frequent off-key clunkers notwithstanding.
A musicians' strike forced the performers to sing and dance to a piano and metronome accompaniment. The orchestral arrangements were recorded and looped in post-production.