Here in Georgia we have the "Clean Air Campaign" where you can log you commute alternative. They give you $3 per day for your first 90 days in the program (up to $180) and they have monthly drawings. I started in late September and I received $171 for my first 90 days (I skipped a few days), I won a $25 visa gift card another month, and now today I won the $100 visa gift card prize.
Oh and for Feb they giving away $25 target gift cards for the most frequent commuters in different catagories at work here and since I'm the only biker here it'll be another $25.
Not a bad haul.