I'm a big fan of the project based learning approach used by the EdVisions and Big Picture schools.
I believe OPuS, through the innovative use of Web 2.0 tools and an open-source structure, can play a big role in extending this approach to a much larger group of schools.
If you are a teacher, and have a passionate interest in a subject (it does not need to be the subject you teach), please consider starting a Community of Practice on OPuS.
By doing this you will not only feed your own interest, but you will help create a learning environment where students can find their element.