My friend Bill Whirity (see link to his website on the side) is making a movie (look for his other movie Broke on netflix!) called The MisInvetntions of Milo Weatherby.  From what I have seen of it, it will be awesome.  It is about these two kids and their, well, misinventions with science. They just finished shooting it, so no idea when it will be out.  Here is a great video from it:

http://billwhirity.com/milo/videos/microwave_implosion.mov

UPDATE:

http://www.billwhirity.com/milo/index.html

Has a trailer and information about the movie.  I have seen it, and it is excellent!