Harry Nilsson appears briefly (as "Lassie") in "Party From Outer Space" from Albert Brooks's album A Star is Bought.

 

Party from Outer Space

 

The song is a parody of "break-in" records where an interviewer asks questions and the answers follow in the form of fragments taken from songs by different artists. Comics Bill Buchanan and Dickie Goodman invented the genre with their song called "The Flying Saucer."[1]