I feel rather silly that I hadn't thought of looking for magpies on youtube before. After all, Pica Pica Press in interested in all things relating to its namesake. I do try to avoid the ones of pet magpies, though—they tend to make me sad. Here's some brief reviews:
This one features a pause to give a sweep over the location—the foothills of the Colorado Rockies, a "this is where this guy lives" kind of shot. I'm pretty damn envious of the view, bird, but a parking lot is still a parking lot. And then the magpie seems to be stamping its feet, which comes long after you've begun to wonder — is that damn bird trying to talk? (See pet videos.)
A troublesome magpie tries to get the attention of a dog by whimpering. The dog isn't having it and uses univeral inter-species body language to say: I don't see you, ergo, you don't exist. Go away.
Magpie flight is about what you would expect: in slow motion, they really do look like thugs surveying their territory. The landing, however, is utterly spectaular, a magnificent slap in the face to the pathetic earth-bound creature they've just left behind.
Enjoy your trip down the rabbithole...