Moderately fascinated by word of Kerouapp, which seems like it places your tweets on a map with a handsome timeline.
Here it is in action at the Guardian UK: Krakow Twitrip
Al Tompkins at Poynter talks with the NewsHour team about their awesome Oil Spill widget that measures how much of the black stuff has leaked into the Gulf of Mexico. My favorite part of the widget? Includes a slider to adjust the rate of the leak based on whose estimates you believe: BP’s, USGS, or other experts.