Tim Hortons Roll Up the Rim Contest

Tim Hortons once again is doing the Rol up the Rim to Win contest, where you can earn cash prizes, cards, netbooks and food and drinks from Timmies. The contest goes onto May 30, 2010, so there is plenty of time to go and grab a coffee at Tim Hortons. The chances of winning are 1 in 9, but I find it's really hard to win! Out of maybe around 20 cups, I only got a free coffee! I have heard people win donuts as well, but it seems that all the large prizes are won by residents of Ontario. Hmm. Has anyone ever had any luck winning anything other than coffee and donuts?