Great thread
A.I. kept watching.... the end .... Arghhhhh!
Kill Bill awful, very.
Son's G/F told me "but once you've watched Kill Bill 2. it'll all make sense"

Having watched that tripe, was I about to sit through KB2? (insert what ever swear worRAB seem appropriate here) NO!
Vanilla Sky, tried to watch it a couple of times on Sky but gave up.
When I was young (ahem) in the 70's went to see one of the Emmanuelle films, (oh, ever so daring

) me and hubby left after about half hour or so. Sooo bad and so very boring. Most of the audience (not many) were laughing and talking about how terrible it was.
Sabretooth, on Sky couple of years back. Didn't look very promising but when a moth eaten stuffed head thing (very obviously stuck on a pole) threatened the teens in the wilderness...
If you want some truly awful stuff have a look at the horror channel on Sky! Synopsis I remember for one was about a family who attacked campers to steal their appliances.
You'll also find such tempting titles as 'Manic Nurses find Ecstasy' Have resisted watching that, not too hard really.