Comcast has been ratcheting up our monthly cable bill for a long time now, pushing the bill for our cable up to over $100 a month! We only have 1 cable box with HD programming, but we have 3 others doing standard def. We have no extended packages such as HBO, ESPN or otherwise, just regular, HD cable. We found out that there was some strange clause that allowed them to enable or continue features we weren't using or even interested in. In any case we have had it with their shinanigans and outrageous prices.
Sweet! Our new XBMC box is online. It automatically downloads our TV shows from Usenet (yeah, it's still around, apparently) sort of like a DVR without needing a cable hookup. It even speaks UPNP with our Mythtv box so we can use the XBMC box it to watch stuff we DVR'd with the Mythtv box. Might eventually merge the two so I'm not running two PC's in the living room, but I'm afraid to touch the myth box after 4 years of off-and-on hackery.