[OK - this is how awesome and unbelievable the size of the spill is. I originally typed 2500 sq. ft. below, rather than the 2500 sq. MILES it really is.]
I seem to be really into scary pictures and websites lately but I ran across a google map scenario tool set up by Dr. Paul Rademacher and it let you compare the oil spill to various areas in the United States or one of your own choosing. Of course, we're all awed by the some 2500 sq. mi. of oil floating on the Gulf waters but this really brings home the enormity of the situation. Here is a picture of a map I created with Rademacher's tool, showing the oil spill covering the city and environs of Albuquerque.
You can see the specs for the analysis and create your own map here: How big is the Deepwater Horizon oil spill?.