I have a friend with AT&T cable and, well, let's just say she's not very technical. She didn't know there were different channels for HD and SD, for example.
We were discussing tv shows and I suggested she watch missed episodes with on demand. She told me she didn't realize you could watch tv shows that way. She's used it for movies but not tv.
It made me wonder if ATT even has this. I don't know anyone else with ATT and she lives out of state so I can't go over and check.