Here's a fun activitiy from Teachers Love SMART Boards that could be used in a variety of different ways to stimulate student interest, but be advised: It's a math trick (shhh... don't tell!)
Role Model Activity from Teachers Love SMART Boards
The activitiy guides students through a series of brief and fairly simple mathematical procedures that supposedly predicts their ideal role model. However, no matter how they complete their calculations (assuming no errors, of course), the answer is always nine. So, the teacher edits the list of possible role models to include herself/himself at position number nine, and the fun is sure to follow. Of course, you could use the student's parents, the principal who provided you with the SMART Board, the Tech Dept. staffer who saved your electronic bacon last week, etc. - the choice is yours!