A colleague turned me on to this cool site: The Green Bike Project. This is a reward-based program in King County, Washington that tries to get more people out on their bikes. Participants pledge to reduce their drive alone commuting by 60% or more.
For those people that already have bikes, you'll get a free tune up. Folks without bikes will be loaned a green bike. Upon fulfilment of the pledge, bike owners qualify for entry for a $1000 REI gift card; green bike-borrowers get to keep their green bike.
Pretty cool, if you ask me! Now all I have to do is move to Seattle, sign up, and steal my helmet back from my 3-year old nephew.