3rd Rock from the Sun

S05E19 Frankie Goes to Rutherford

Mary welcomes back Frank, a former student, for a series of lectures, sparking jealousy in Dick, who fears Frank has romantic intentions. When Dick confronts Frank, he misinterprets Frank's suggestion of being gay as a confession of being an alien. This misunderstanding leads Dick to frequently visit Geoffrey's Lounge, which he believes is a hangout for extraterrestrials. Meanwhile, Sally, Harry, and Tommy are surprised by Don, who accidentally thwarted a bank heist, inspiring them to plan their own robbery. The Solomons each dress up as members of the Village People, culminating in a rooftop gathering with Don in his police outfit, ending with a lively Village People song.