I just realized the greatness of Photoshop Actions, and the realization makes me feel GREAT!

Of course, deviantart has a huge collection of user-submitted PS actions, so head on over and check it out if you happened to have Photoshop. If not, there are also other actions and scripts for other well-known post processing software like GIMP.

This is by far the coolest thing I find for Photoshop, aside from some high grade plugins.