Back is the initially touted then disabled feature of Genius recommendations for movies and TV shows in iTunes 8.1, iLounge is reporting. It only works for official videos purchased or rented in the iTunes store (or transferred from a Blu-ray disc's digital copy), and seems to vary country-by-country.
It's a further indication that lots of the Genius-related magic happens on the server, as the feature was re-introduced to iTunes without a local software update, according to the iLounge folks.
So, as you can see, I don't use iTunes to keep track of my movies, so Genius couldn't offer me any recommendations inside my library. And if you need something to suggest to you that you may be interested in the other Batman movies while you're watching Dark Knight, this is the tool for you. [iLounge]