Does "Clue" count? It's got a bunch of fairly well-known actors in it (Christopher Lloyd, Martin Mull, Eileen Brennan, Tim Curry, Madeleine Kahn, Michael McKean).
Great movie.
Well, it wasn't very successful and it's based on a board game.
But it achieved popularity outside of the theater realm so by definition it would be a cult film. But no, I wouldn't call it obscure so I don't think it fits here.
It falls more into the Evil Dead catergory I'd believe.