Courtesy of Rock, Paper, Shotgun, I found this vid and will share their comments as well:
"It’s an odd beast. According to HalfLife2.net it was sent to them by Valve, and it’s clearly made with a wedge of money. But it doesn’t really seem to say or do anything. What’s the message? The Orange Box is from outerspace? It will break your property? Presumably, “It’s here” is the message we’re supposed to take. But since it contains five of the best PC games there are, maybe that should be the focus of its promotion? Who knows."