The Hipstamatic iPhone App is probably one of my favorite iPhone apps, so far to date. For $1.99 you get a picture taking tool that stylizes photos to look like fun classic images from the past. Plus, I think it's sharper than the regular camera though there is a slight learning curve.
"The Hipstamatic for iPhone is an application that brings back the look, feel, unpredictable beauty, and fun of plastic toy cameras from the past."
My Hipsta photos are featured on my blog, but you can always check out the flickr site for the mother load.
Via Susie