I've been trying to find a decent way of making a vignette in photoshop for a while. I shoot in jpeg mode on my Canon 10D because I don't have enough memory cards to shoot in RAW all the time. Well, one of the great things about RAW files is using Adobe's Camera RAW on them. It's rather frustrating to me that I can use Adobe Lightroom or even Apple's Aperture on jpeg files and do all the things on the jpeg files that I can on RAW files with those programs, but not with Adobe Camera RAW! It only allows you to use it on RAW files. Well, one of the things I like best about Camera RAW was the vignette feature. Well, lo and behold, I found out tonight that you can get the same thing by using Photoshop's Lens Correction Filter (requires Photoshop CS2). So, to make a vignette, simply go to Filters —> Distort —> Lens Correction. Play with the vignette settings until you're happy. 
Here's a photo of the beach at False Cape State Park that I added a light vignette to.
