You should absolutely own a bicycle by now, whether you use it to commute to work or just to get around the fabulous city on weekend excursions. Your best bet, if you're still catching up to the healthy, environmentally friendly way to quickly roll to your destination: Get to Eddy's. Stocked with all kinds of bikes, including fat tire bikes and single-speed commuters, Eddy's has everything a cyclist could want. Anyone who buys a bicycle from the shop receives a complimentary size assessment, and the folks there will make sure you've got the right bike, whether you're preparing to ride to the bar or training for an Ironman triathlon.
Multiple locations, eddys.com.