discovered that GIMP is making its way to OS X native goodness, as Mikael Hallendal,
involved with the project, posted on his
blog. For those not familiar with GIMP: it's basically an open source version of Photoshop. No, it isn't an exact,
feature-for-feature alternative, but it's one of the best available analogies I can think of.
As far as I've found, there's no ETA on when you'll have one less reason to run X11, but this will certainly be a welcome addition to OS X's graphic edition options.