Haven't I? What does BT have that Sky doesn't?
Robot Chicken is one programme I know of. On satellite it is shown at around 1 in the morning on Saturday on TCM2, but on BT Vision most of the episodes are available to download. I know this as I record it from Sky and last week there was a BT Vision advert saying they had all the episodes.
I noticed that on Sky some of the on-demand content for channels like FX is quite weak, maybe BT have the missing programmes?