Malcom McDowell and Daniel Stern had costarred in the previous year's Blue Thunder (1983). Right before Malcom's character enters the stage, he says to Stern backstage "Catch Ya later" , which was also his character's catch phrase in Blue Thunder.
I think I'm in love!
Neil Allen: If this is love, sex is gonna kill you!
During the reprise of "Hot Shot", when Reggie is lying at the front of the stage singing, a person with a distinctive checked cloth cap can be seen in shots from the audience side, but isn't there in shots from the stage side.