Movies that are not well Known

A bit of a spin on the "wuts ur favorite movee???" topic that I don't really see much in places.

Sometimes we have this love for things that not too many people know about but we personally think this thing deserves more recognition than it gets. For movies, sometimes I hear people mentioning their favorite film and not being too happy that many people either don't recognize the title or it's too obscure to care about. What are your favorite movies that are eclipsed by more well-known films? Are they made by big studios like Universal or Miramax, for example? Or are they movies that were released at a bad time when an iconic movie was released as well? Or was your favorite movie just forgotten by the passing of time?