I was torn between Fear and Loathing in Las Vegas, The Matrix, and The Dark Knight. The Matrix was a very creative movie. I'm not too keen on it myself, but it is very unique. The Dark Knight is just awesome. But I went with Fear and Loathing in Las Vegas- total classic, I love Johnny Depp, and it's the closest visual representation of using drugs out of any movie that has ever been made.
Although none of those choices are my favorite movie. Moulin Rouge is my all time fav!