I was watching Back to the Future Part 2 last night from the trilogy box set and noticed something a bit strange.... In the credits at the end it gives a list of "footage used with permission of..." credits for the likes of The Smurfs and Miami Vice to name just two. Thing is, i don't remember seeing clips from either of these anywhere in the film, not on TVs in the background or anything. Were these edited out of the film for rights issues???