There used to be a time when tv at Christmas time was a highly anticipated event. Yes, you have a huge captive audience. In the 1960s and maybe 70s there were three channels (2 x BBC plus ITV) and audiences would be millions throughout the day.
Nowadays, where there are so many channels stuck in a computer-programmed rut of Wheeler Dealers, Repair Shop, Judge Judy and so on, even the main channels find it hard to present anything new or thrilling.
In the olden days (sorry) there were things the nation looked forward to. Here are a few random reminiscences: