MythTV can accomplish what you are after PVR-wise. I'd consider something similar, only that I hardly ever watch shows. Sure, there's TV because I use cable internet, but that's about it. Maybe I've watched 30 minutes in the last month.

I go thru some 500 emails/day - mainly due to development mailing lists, excluding spam. I get twice that many in spam, of which less than 3% make it thru my setup to my actual inboxes.