Wanna make stupid pics of yourself to impress your friends, but lack basic Photoshop skills and/or motivation? Me too! Thankfully, design group OKFocus has invented Overlayer.com, a tool to upload pics of yourself with funny overlays. You can upload images from your computer or allow it to use your camera.
Though most webcam programs like the built-in Photo Booth in OSX have their own effects you can play around with, what makes Overlayer really fun is that the overlays they've chosen are just really really good and funny (you can add your own overlays, too). For some reason, it's just incredibly addictive.
Here are some of my favorites so far: