In my humble opinion, some of the best armchair traveling DVDs are the Visions Series. Hour after hour of high quality aerial footage of many different European countries.
Yes, the accompanying music isn't the best I've ever heard, and sometimes the accent of the narrator comes into question. But I don't watch these films for those things.
I watch to escape, to step into a country I don't have the time or money to visit properly at the time. I watch to remember my holidays and to get ideas for future trips.
These DVDs have a sedative, calming effect, as well. I love to keep them playing in the background whenever I'm cooking or cleaning. They're perfect for Wanderlust sufferers everywhere! (If you want to call it "suffering", that is...)