Thanks to Dave Haddock for this top tip. "Stephen Fry and the Great American Oil Spill" will air on Sunday, 7th November 2010, 8pm on BBC Two. Stephen Fry and Mark Carwardine visit Louisiana to witness the impact of BP's Deepwater Horizon oil spill.

Stephen Fry loves Louisiana. Four months after the BP oil spill, dubbed the worst ecological disaster in the history of America, Fry returns to the Deep South together with the zoologist Mark Carwardine, to see what the impact has been on the people, the vast wetlands and the species that live there. What they find both surprises and divides the travelling duo.