In an impassioned effort to raise money for a 5-year-old boy who is dying of cancer, Smallville's Allison Mack and invite people to make a 30-second YouTube video detailing their love for superheroes. For each vid submitted, fan group is donating $10, and is chipping in another fiver. What's in it for you besides, you know, a good mark from the man upstairs? The vid-maker who makes Mack smile the most gets a T-shirt autographed by her super cast mates. For more details - or just to donate directly to the cause - click here.