http://www.youtube.com/watch?v=0B69RHqAfj8 (Fission & Fusion, about 6 min.)

http://www.youtube.com/watch?v=9gERUtbtkRc&feature=related (Binding Energy of Fission, about 3 min.)

http://www.youtube.com/watch?v=pusKlK1L5To (Fusion in the Sun, about 3 min.)

http://www.youtube.com/watch?v=vjqIJW_Qr3c&feature=related (Mousetrap Chain Rxn, about 2 min.)

http://www.youtube.com/watch?v=50RWvXmQcFk (First 4 minutes is a review of 4 forces, the next four minutes compares chemical & nuclear reactions, the last 4 minutes explains fission and fusion.)