I've also had a Time Warner HDTV cable box for several months now (but here in San Diego). My experiences mirror Seth's above. The Sopranos, on HBO, looked stunning in HD - significantly better than the standard HBO feed. Some of the movies played on HBO have been impressive in HD as well. I watched JAG for the first time on CBS-HD last night though and wasn't as impressed.
Does anyone's cable TV provider offer HDTV?
Does anyone know if cable TV providers will soon offer boxes capable of HDTV? Do youy already have such a service in your area? (My service just switched from AT&T Broadband to Comcast, but I still just have the basic CATV box). Many prime time network shows and sporting events will be broadcast in HDTV this year. I do not want to switch to satellite if cable TV will soon catch up because my internet access comes in over the same cable and it is very convenient to use a simple splitter, and then be billed for both services by the same company.