Some time in January I'll sit down for a few days and review Seasons 1-3 and then go to Season 4.
Actually,that reminds me....it's been a couple of years since I've gone through Upstairs/Downstairs.I'm overdue.That should keep me busy for a week or two.
Unlike some I think that Downton,while outstanding,can't hold a candle to Upstairs/Downstairs.
I use a site like his link to watch a ton of stuff. It also has tons of popups etc saying you need this and that. If you just close them out NEVER CLICK ON THEIR CRAP it is safe and you can watch whatever you want.
Odd. Running Linux here and can watch the vids just fine.