I really love the idea of spaced repetition, and I really love Wikipedia. I wish, however, that there was a fusion of the two spaces. Imagine surfing Wikipedia, reading an interesting fact you'd like to remember, and simply clicking a button next to it that added that fact to your daily spaced repetition learning database.

Supermemo has wikipedia integration. (Supermemo is also a usability nightmare in other areas!)

Tackling some of these ideas is something I'm planning on doing once I finish up my current projects, but if someone else jumps on them first, all the better.

I'd like to see that!