surprisingly, i don't think it is. it's a nice little resource that IMDB tucks away -- why is the only mention in the bottom footer?
fyi, we've always had our eye on doing something similar with http://gorankem.com (currently just music discovery) ... we could apply our same ranking methodology to tv shows & their episodes, but movies are a different breed.
we compare apples-to-apples (no WALE vs. The Godfather) so if/when we get there, it'll be (e.g.) rank your favorite tarantino films...