Sorry about the short notice but at 10 PM UK time this evening (Sunday 30 December), Sky Arts digital channel is showing a documentary listed in my newspaper as 'Deceptive Horror of Mario Bava'. I'm guessing that this is the 2004 Italian documentary Mario Bava: Operazione paura', given that the IMDB entry for that shows that Sky was involved in the production.

The channel does tend to repeat on regular basis so if you miss this evening it'll probably turn up again.

As it turned out, this was actually a screening of the 'Mario Bava - Maestro of the Macabre' documentary. And everybody here has probably seen that already.