Winter Digitation
This one wasn't alot of work, but I liked the effect. Duped the image into a new layer, posterized it by a factor of six, the pixilized and desaturated. Set that layer to Overlay blending. Duped the modded layer, used the basic Edge-Detect filter with a setting of two, set the layer to Lighten Only, and tweaked the transparency so it was kinda subtle.