One thing I love most about shooting film are the 'mistakes', or wonderful surprises as I like to call them. These unforeseen outcomes are usually the result of leaking light, but the way it happens is usually so stray that its magical. Out of a whole film of well-exposed photos, there may be just one that resembles some other-worldly pattern. To get all spiritual and stuff, I think this idea definitely applies to existence as well. A mistake =/= failure.
Here are a few wonderful surprises.