I just got back from a weekend in Brooklyn and did some extensive touring on foot, including a run that took me down across the Manhattan Bridge, through Chinatown, then back over the Williamsburg Bridge. I really enjoyed my visit, and hope to expand my exploration to more of Manhattan. It seems like it would be a great city to ride through as well, so I'll be tempted to take my own bike, rent one, or maybe even use Citibike since the network looks incredibly comprehensive.