Web service WhatTheFont analyzes uploaded images and returns the font style matching the font used in the image.
From the site: "Ever wanted to find a font just like the one used by certain publications, corporations or ad campaigns? Well now you can, using our WhatTheFont font recognition system. Upload a scanned image of the font and instantly find the closest matches in our database."
We tried a few "scanned" images (i.e., pictures taken with a digital camera) and WhatTheFont analyzed the pictures and returned the right font instantly. And if WhatTheFont can't find your font, you still can submit it to their active forum.
This could be a very cool app for all of you designers and Web publishers out there looking to find the name of that elusive font you've been dying to use. www.myfonts.com/WhatTheFont.