Hopstop.com

I haven't had much need to use this website yet, but I think it's a great idea. Hopstop.com gives you subway or bus directions from one point to another in any of five cities: New York, Boston, Chicago, San Francisco and Washington, D.C. Users enter the language they want their directions in, the transportation mode, walking/transfer preference and departure time (in case there are differences in service availability). I'm a born and bred New Yorker and it's pretty much the only metropolitan area I've ever lived in, but if I move somewhere else next year, I'm sure I'll live by it.

check it out! http://hopstop.com/