The Plastic Bullet
This Red Giant App for the iPhone is a lot of fun. Hipstamatic is cool as well but I like that you can take your existing photos into Plastic Bullet and just see what happens to them. The random effects the app applies are often very beautiful and I have yet to see it produce the same results twice. I've got to say, in this day and age of immaculate digital images, I really love the crappy lens on the iPhone. It just has its own unique quality that I'll be sad to see go as the little camera phone inevitably becomes a real point and shoot.
Here are a few of my favs:
On an iPhone related note, I'm not sure Key Light is entirely iPhone 4 compliant so that's on the to-do list. I'm moving this week and have family in town so signing off for awhile. Have a great holiday weekend.