http://www.youtube.com/watch?v=aELx76u9dVw&feature=related
http://www.youtube.com/watch?v=7TjaRzpugwY&feature=related (one of my favorites)
http://www.youtube.com/watch?v=VUjCfBo-R38&feature=related
http://www.youtube.com/watch?v=r8xZ4tmUkDY&feature=related (this is hilarious and creative!)

One of these days, I GOT to learn that button system in the RH. It seems so easy to pull off stuff that would be close to impossible on the regular piano accordion...