EDIT: Looks to be dead, but I've changed the link below to their “Dentek Nation” club. If you sign up, they say they'll send you freebies as soon as they become available.
I always used to think flossing was for losers who got tricked into thinking it was important. Then one day I went to the dentist for a routine checkup and proceeded to spend the equivalent of Japan's GDP on drillings, fillings, and a whole lot of laughing gas. After that, I started flossing every day and thus I'm pretty excited about this. These little things are awesome, as you don't have to worry about wrapping the floss around your fingers and cutting off your circulation (even if watching your finger tips turn purple is kinda awesome).
I'm not sure how they're going to give away $20 worth of stuff, but you'll get 50 free flossers, a few coupons, and some other cool stuff.