To not steal the fire from other forums, I think film, album, and literature reviews should be placed in
The Arts forum. I'll bring this issue to the CAT team, because I think The Arts forum and this forum could cooperate quite a bit, possibly allowing reviews posted there to be entered in competitions here, etc.
Some book reviews can definitely go here already, though. For example, I wrote a review on a language book, and textbooks or other books of an educational nature should be fair game, since you purchase the book for some other purpose than just reading.