I don't know when the cable companies came up with this scheme. Every show I watch (or watched during the season) is on Sunday night.
And then on top of all that I have thrown in the towel (sponge: UK) for Downton Abbey on Amazon. I am sure that premieres every Sunday night. (And when did Masterpiece Theater become just "Masterpiece?" Next it'll have an exclamation point at the end.
And finally, Sophie's Choice is haunting my TiVo Suggestions.
I don't understand why Sunday is the night to release the good programs. I imagine tiVos and DVRs have made Nielson ratings irrelevant, since you don't have to choose what to watch. Someday soon, we'll have just one day for new programming, Sunday, and after that just a week of repeats till the next Sunday.