20+ city bikes for spring 2011

It might be part fashion, part environmental consciousness, part thrift, but bikes are a city dweller's new essential. This season, emergent categories such as fixed-gear and Dutch-style cruisers are joined by numerous commuter hybrids—bikes that are somewhere between road and off-road bikes made for the hard knocks of tooling around places like the Windy City. Here, we've culled 20+ of the newest or most interesting bikes for getting around the city. Did we miss some? Of course, but feel free to add a comment below and tell us about the two-wheeler that makes your heart shift into high gear. Click an image for link to buy or store locator.