I've found a great resource for those of you who like to watch Downton Abbey. This blog has a number of other shows available, including Doctor Who, Game of Thrones, Merlin, and Sherlock.
1. Go to jetstreak.tumblr.com
2. Click on Masterposts, then Television, and select a show from the list.
3. The episode will play in a Google Docs window, and you'd have the option to download it if you'd like.
I've been watching TV shows from this site for over a month! The episodes are of good quality and consistent, great for pausing and rewinding to look at some of those great Edwardian fashions (: