Again, besides the obvious "Rocky Horror is a Musical" there are also less blatant references. The Iconic Frank N Furter outfit was based partly on Cabaret. There are references to everything from The Sound of Music to My Fair Lady and, depending on which cast you see, there are references to Rocky Horror in everything from RENT to Little Shop of Horrors. The popular Musical-TV Show "Glee" also did a spoof on the show.
