My DH and I were totally sucked in by Downton Abbey, which just completed its four-week run on Masterpiece Theatre. We thoroughly enjoyed every bit of it -- so much so that I ordered the DVD from Masterpiece. It is the unedited UK version, so I'll watch again when it arrives to see what I missed.
A second Downton series for Masterpiece next year is in production. We can't wait. Anyone who loves British historical drama should enjoy this series. Maggie Smith was at peak performance every time she was on screen. If you liked the movie Gosford Park, you'll love this, it's written by the same author. And this was a fun nod back to the history of Masterpiece and its original Upstairs, Downstais series.