I want to get away from cable TV, but FWIW I have had a Tivo and it rocked. That said, twelve years later, they haven't improved it much. IMO they have been exceedingly lazy in coming up with advances. Multiple podcasts bitch about the same lack of innovation from Tivo. Sad part is they are still best in category until you add in HTPC. HTPC setups are more enthusiast based. Very powerful, extremely flexible, and of nearly unlimited capability. HTPC setups are more expensive up front and more complicated up front. Once set up however they seem to be the cats ass.
I want simple and cheap. Netflix, Hulu Plus, YouTube, PC streaming (not in the Roku), and a few others would be nice. Also I would expect that BlockBuster and or RedBox are way overdue to streaming.
I would love to abandon the networks and cable channels for a la carte instead. May get the Roku just to try it.