Never fear, Dimsy's Top Period Dramas is here! (Well, there. At the link.)
This site is a must-visit for people like me who never remember to watch Masterpiece Theater (or any other program) when it actually airs. Dimsy scours the 'net for links to productions of classic novels, and posts them on her blog. Want to watch the recent adaptation of North & South? (Hint: the answer is yes.) She's got it. Just about every Jane Austen film is also available; there's plenty of Dickens and you can also find two versions of War & Peace. Though there's the occasional broken link due to copyright issues, overall it's a reliable resource—and a great place to visit on a rainy day.