From Jamais Cascio at World Changing comes this reference to The Oil Drum, a web site devoted to information on oil production in particular on peak oil.
Loads of links, lots of good information, some of it technical, some of it very easy to understand.
How many oil platforms are in the Gulf of Mexico? See here. This chart also tracked the progress of Katrina and Rita.
What about gasoline supply? See here.
Spend some time on this site. It helps to explain how the gasoline prices went up so quickly and are coming down so slowly. (No, it is not a Bush-buddy oil conspiracy.)