And best of all you don't have to pay a monthly fee as you do with Tivo. (As of yet, it's probably only a matter of time before M$ starts charging!)
I sure hope they don't start charging, considering Media Center is why I bought Vista. The other boon there is that it seamlessly integrates with my Zune, automatically re-encoding and syncing anything recorded in the last week (which is, of course, more configurable). I don't have any HD, but I also don't have any DRM-crippled
The cost of living hasn't affected its popularity.