Replay TV and TiVo will never reach mass acceptance until it is easy enough for your Mom to use, or until your Mom and everyone her age is gone and buried, which could be a while still. As a matter of fact, these people may be around for a lot longer than your Mom. They don't want to spend an hour mucking thru 4 levels of menus and options so that they can watch Star Trek after they put the kids to bed.
Flexibility is great, but who's got the time for all that 'personalization'.
810, the high-tech dream machine.