This is defiantly one to watch, and is the best season of factual programs i have seen on the BBC in years.
I would recommend the program called 'The Highest Court in the Land: Justice Makers', but the BBC's useless policy on program availability means you can't watch it. Keep an eye out tho, i did hear rumblings that one of the changes to the BBC would be a better on demand service including long term availability of this sort of thing.
Anyway, the current programs are all in the form of lectures by a Professor in the US. All very interesting discussions about Justice. TOP TIP: I often include material from BBC documentaries in my essays, with appropriate citations of course. It demonstrates wider research, and always goes down well!
As always, your feedback is encouraged!
Edit: Thanks to Minxey for telling me about the Channel 4 documentary about the Supreme Court, here is the link! Clickey Clickey