This film is so incredible I have a hard time describing it. It is a very depressing, yet beautiful look into the lives of four drug addicts; a pair of young heroine addicts, Tyrone Love and Harry Goldfarb, Harry's cokehead girlfriend Marion, and Harry's mother, Sara Goldfarb, who has become dependant on the amphetamine diet pills prescribed by her doctor. All the performances are stupendid; Jared Leto plays a wonderful desperate junkie as Harry, and Marlon Wayans shows how truly talented he is and how he can do so much more than the crude comedies he is known for, and Ellen Burstyn is particularly spectacular as the aging Sara Goldfarb, delivering a beautiful performance. The main theme song is what made this movie famous, no question, and for good reason, as it sets the perfect tone for this dark peak into these peoples' personal hells. It is an extremely touching film, and definately something you should be emotionally prepared for and not something to just watch on a good happy day with your friends, as it is, admittedly, quite a downer.