I use a simple and inexpensive faux dry mount method that works well, very similar to Gerald's idea. Take foam board, and w/ a razor knife, cut it to the exact dimensions of my photo, but w/a 45 degree bevel on the cuts. You don't have to be too fussy, as ragged or mis-cut edges will be covered up by your mounted photo. I then spray the board and the back of my photo w/ Elmer's Craft Bond spray adhesive, and carefully lay my photo on the board. Next, I lay another photo face down on the glued photo (I have LOTS of them that didn't make the cut), and use a rolling pin to gently, but firmly, press the photo onto the foam board. You could just lay a big book on it, but I like the rolling pin (keep it away from the wife, as women are deadly w/ these things in arguments). After it's all dry, glue a little hanger or a piece of mat board w/ a hole in it to the back. Hang it on a nail, making sure that the foam board is flush w/ the wall. It makes for a floating-type of look once you have it displayed.
I like this much more than framed photos that are mounted under glass because glass reflections don't ruin the viewing, and it shows off the fiber paper of your print (glossy rc photos work fine too, but fiber really is best). Once you get the hang of it you can knock out a dozen photos in one sitting. Unlike framed and matted prints under glass, the cost of this is peanuts, and to me it also looks better.