About a month ago, the DirecTV HR22 HD DVR popped online at Best Buy's website without any rhyme or reason. Four weeks later, we've realized it's not a mistake. The $199.99 unit is listed with capacity to hold up to 100 hours of HD programming (or 400 hours of SD footage), and word on the street puts a 500GB HDD in there. Additionally, our tipster has let us know that without any action on his part, an HR22 showed up unannounced when he had DirecTV installed just a few days ago. Anyone else managed to secure one of these? Any noteworthy differences from its predecessor?