For those of you keeping up with the Gulf Oil spill, the New York Times has a great interactive map that chronicles the flow of oil from shortly after the initial blast (4/22) to near-present, adding in details for sightings, predictions, worst case, and various numerical statistics.  In addition, they show various undersea current flows and other influential data combined from various sources.

Map of the Oil Spill in the Gulf of Mexico – Interactive Map – NYTimes.com.