Mapnificent is possibly the coolest thing I’ve seen in a week. Using Google Maps and transit data, it highlights all the places you can get to from a given position in a specified number of minutes, and then lets you search the highlighted area with Google. So, you’re at your office and you want organize an office happy hour: drop the pin on your location, and move the slider to the maximum amount of time you’re willing to travel for alcohol. Then search for “bar” or “drinks” or “pizza” or whatever it is you need and watch the application plot them on a map, complete with (somewhat unreliable) links to Google Maps directions. If you have a friend in another part of town you want to invite, you can add a second origin point for that person and see where the overlap is.
Go play with it. But not, you know, for TOO long. You have to work before you get to have happy hour, after all.