May is National Bike Month, and every year the Cascade Bicycle Club organizes the WRQ Bike to Work Month, week and day. This is a good time to start biking to work -- as they say, "Bike it, you'll like it!".
Together with this is the Group Health Commute Challenge, which encourages people to join teams at work and is giving out various prices to random winners and to teams with the most commuters, most miles, most new commuters, etc.