Gravest Hits is the debut 12" EP by the American garage punk band The Cramps, compiling both sides of their first two 1978 Vengeance singles, "Surfin' Bird" and "Human Fly," and adding a fifth track, a cover of "Lonesome Town". It was released in July 1979 on Illegal Records and I.R.S. Records. The tracks were all produced by Alex Chilton and recorded at Ardent Studios in Memphis in 1977. It featured liner notes by "Dr. J.H. Sasfy, Professor of Rockology, American Rock'n'Roll Institute, Washington D.C., U.S.A." Gravest Hits is one of first documents of both the rockabilly revival and the psychobilly genres. The photograph on the back of the original sleeve, of the band in performance, was taken at New York's Palladium theater.
“Human Fly” appeared in episode 4 of the UK ITV comedy drama series Married Single Other as Clint scaled four floors of a block of flats in Leeds to try to recover his relationship with Abbie.