If it's any help, one of the dodgy characters seems to come just before the phrase "Laughably bad" in the Five US listing for the movie "Darkness Falls" on 2 November. It also seems to be related to the {ital} tags in the Five US descriptions.
The {ital} stuff really has no effect, but you're right, it's that listing and one other that has an ascii 11 character in it. D'Oh! It's going to mess things up again today when my grabber runs...
I didn't mean that the {ital} tags were causing the problem, just that they seemed to be near the places where the rogue ascii 11 characters were found.