Downton Abbey Revisited Sunday at 8 p.m., Channel 2

If you’re jonesing for season 3, which doesn’t begin airing in the states until Jan. 6, here’s a little appetizer. This special recaps the first two seasons, previews the third, and gives us interviews with writer Julian Fellowes and many of the actors, including Hugh Bonneville. PBS promises the special will be “delightful,” and Angela Lansbury hosts. Free Bates.