I wish they would make this a sticky but anyway, the Cable Co. can not block ANY HD channel they carry. If you get their lowest tier you still get all the “free” HD channels. Now this excludes those that are “pay” based. HBO, HDNET, ESPN, etc. but all others are there. This is an FCC law in place NOW; not in the future.
I’ve often wonder way a class action lawsuit hasn’t been filed aginst them. The small print makes it sound like you MUST rent their box in order to receive any HD channels. This is not true! If you have the correct tuner (SXRD does) you only need to connect the cable directly to the TV in order to receive them.