I consider it a camp classic and nothing more. It is fluff, full of inaccuracies and that is why Mr. Vidal took his name off of it. He wanted a serious biopic with some titillating scenes but Mr. Brass had another vision. The best website I've foundf on the phenomena is:
www.caligulathemovie.com. It is a non - professional vision worthy of a look by any fan of the movie. I have nothing to do with it, I found it doing a google search before the DVD came out. I love Gore's trailer for the re - make (if only it were real!) What a cast.
http://www.imdb.com/title/tt0796207/ It's on youtube occasionally, search for it!