Ride the City maps the best or safest urban bicycle route from point A to B. Presently featuring multi-lingual maps from New York, Chicago, Austin, Louisville, San Diego, and Seattle. Their blog posts updates about new cities added to the grid, or other topics relating to urban bicycling.
NextBus uses GPS to tell you the predicted time of the next bus. Google maps show buses in real time, and you can get updates on your phone/PDA. The coverage is limited to certain agencies within the US, so these other sites might be useful: Hopstop covers subways and buses in NYC, Boston, Chicago, San Francisco, DC, and more. (mobile version) Google Transit has many US metro areas in addition to Canada, Europe, and Japan. (previously) Many more locations inside. [more inside]
Maps: Finding our place in the world is an exhibit at the Walters Art Gallery in Baltimore, and it runs until this Sunday June 8. That page contains images of a few of the maps. One of the many great things included is an animated map of the US Civil War in 4 minutes (one week per second, timeline noted at bottom, casualty counter rolling in bottom right corner - info about this animation) The exhibition book was previously linked here; that site includes higher-resolution versions of some more of the maps. I was floored by all the stuff they have; in terms of the rarity of the stuff in it, and the geek-delight factor, I think it's probably the best gallery show I've ever seen. [more inside]
Chicagocrime.org takes the Chicago Police Department's Citizen ICAM and puts it into an easily searchable -- by crime type, street, date, district or location type -- format, along with a Google Map. Who knew police station parking lots were so dangerous?