Anyway, here's my list. I look forward to your contributions!
-Magic
- -From nature/ley lines
-Inherent from birth
-From objects of power
-Learned/academic magic
-From other beings, such as demons (either direct theft of their power or use of the demons to do your bidding)
- -(Obviously magic can be one of these)
-Control over an "element," Ex. Avatar
-Talents, Ex. healing, telepathy, clairvoyance
-Superhumans/Mixed-breed humans/Mutants (very similar to above, but I feel it can be worthy of it's own mention)
-Religious powers
- -Power from a specific God
-The Force (Star Wars)
-Reverend Mothers (Dune)