I was in London on Friday and visited the Old Bailey, London's famous criminal court that has been operating since the 17th century. Unfortunately I arrived too late to see any trials. However, when googling around for directions I learned that a group of universities have posted the complete Proceedings of the Old Bailey from 1674 to 1834.

  The database has the original reports of more than 100,000 trials at the Old Bailey, and it's all in searchable form. The site is incredibly easy to use, and the trial reports are short and easy to read. I realize that only serious criminal law or legal history geeks will get a kick out of this, but if you fit that category the site is definitely worth checking out.