Nota let's you grab it, mix it, and share it

The basic premise behind Nota is that you (or up to 50 people) start with a blank canvas and then add whatever photos, videos, maps (google), text and speech bubbles you want onto it. If you like your creations, you can then embed your them in your blog, facebook, or myspace page.
With Nota though you can get these photos and videos from other peoples Flickr, Picasa, YouTube, Facebook, your PC, even direct from webcams. You can easily create and collaborate with friends simultaneously on your creations.
The interface is simple yet still requires a little practise when playing about with effects and stuff. You don't even have to register an account to try it out, and if you don't feel like embedding your creations, you can just print them off, unfortunately the videos don't retain their streaming abilities on paper ;-)