i didn't know how many editions there are, but i got the one i had borrowed from Walrus in the past (which is the answer to #2) and was very happy to have gotten it.
i don't have a dvd collection that i'm all that proud of. i don't own many movies at all. i saved the money i would have spent on dvd's for my computer, so there are a ton that I'd like to own but dont, including most of my favorites.