In 1994, my dad rented the movie Clerks. After about five minutes, I shyed away from watching it based on the fact that I was 12 years old and b&w movies had been out of style for a few years. I really didn't know what I was missing or what Kevin Smith would become in terms of his movie empire.
Clerks broke every taboo I had ever known by taking on porn, drugs, sexual misconduct, accidental necrophilia, cigarettes, and various other taboos all the while making me laugh like I had never laughed before.
The casting of this movie was absolutely brilliant in terms of the no-name talent they hired, and the complete lack of political correctness during the filming of this movie made it a sight to remember. The introduction of the characters Jay and Silent Bob who would go on to have roles in all of Kevin Smiths movies and even get their own spinoff was fantastic.
A beginning in a series I'd highly recommend.