My buddy and Germany-based Photoshop World instructor Calvin Hollywood has created a site called Photoshop Freaks which gives countless post-production tutorials. Recently he posted a video about how to give your photo that extra textured look and feel in a matter of seconds. It like a slight "high-pass" appearance without all of the messy glowing contrast lines or over-sharpening.
I like this technique because not only is it simple to apply, but it truly does offer a really unique feel to your final image without applying a messy global contrast or sharpening adjustment.
Below is a copy of Calvin's "dodge and burn" layer he used to overlay his original photo:
If you want to see more of Calvin's easy to comprehend and creative Photoshop tutorials, you can check out his site: www.photoshopfreaks.com