Scott Kelby had a recent post where he demonstrates two techniques, one in Photoshop and the other in Lightroom, that will give you a very nice "gritty" effect/look. Be sure to check them out.
Also, David Hobby (aka STROBIST) had a Q&A with Dave Hill and was kind enough to share it with us (his readers). It's a good read, so take a minute to read it.
Lastly, under the rules of full disclosure, the "Dave Hill" technique that I shared with you came from Omar Casasola, he was kind enough to share it with folks (like me and you) on flickr. Thank you Omar.
