I'd just add (and, I know you know this Matt), that it is art to be able to see a scene, be there at the right time, compose it correctly, expose it correctly, know what filter will enhance the scene, etc. I really try to get it right at the time of the shot. Most of my pp is cropping and the occasional exposure, contrast or saturation adjustment. The more you get away from the original, the more artifacts you end up with. I haven't used Photoshop in a few years -- most everything I want to accomplish is handled by a good capture, in RAW, with minor PP in Lightroom.
You won't be surpised that I'm not a real fan of HDR, will you?
MItch: I'd venture a guess that close to 100% of chicks in magazines are enhanced. Nobody wants to see yellow teeth, a zit, wrinkles, or hair on a girl's face.