PVRBlog reports that PVR adoption is slower than I would have thought - via Ed Bott:

If you own a TiVo, or a Media Center PC, or a PVR from your cable company, you're part of an elite. A new research report from Accenture says that the percentage of U.S. homes with personal video recorders will increase by 500% in the next four years, but even in 2009 more than half of U.S. homes still won't have the equipment to record, pause, or time-shift TV.

To me, the problem is the difficulty in explaining a PVR to someone who doesn't have one. I get answers like "there's nothing good on anyway", or "we don't watch much tv anyway". The thing is, a PVR optimizes whatever you do watch - there are programs I watch now that I have no idea as to when they actually air :)

The bad thing is, the slow rate of adoption means that the current network tactic of starting or ending programs a few minutes early/late will keep happening :(