Hee hee - Good questions.
OK, this, to me, is a very interesting topic. Alot of people don't like bus service at ASMovies because they know it's the last stop of the All Stars IF they're sharing buses. For me, it's one of the main reasons I chose Movies.
On occassions when it's busy, Movies will have it's own bus in the morning leaving for the parks. If it's not busy, yes, they'll share with Sports and Music, but almost never have I had to stand. So, yeah, you wait for the bus to get there, but it's no longer than you're waiting at Sports or Music.
At night, when it's busy, Movies almost always has it's own bus back to the resort. If it isn't busy, and it's sharing, yes, you stop at Sports and Music first, but what is that - An extra 3 minutes maybe? Plus, you can ALWAYS just get off at Sports and have a delightful 10 minute walk back to Movies, or get off at Music and have a 5 minute walk back.
To sum it up, I LOVE the buses at Movies.