Good Job
Good job, I would invest looking for more sound effects though, some sounds didn't sound right at certain places (like the Yoshi sound with Captain K Rool). The movie was pretty good, even though I didn't see the previous ones before this one. I will be sure to do so.
Don't let people give you crap about your movie being so long. I think everyone at newgrounds are used to 5MB files with 30 seconds of play back.
You did a very good job on the sprite editing, but you need to spend a little more time on the other things, like inside Samus's space ship. I understand you might get lazy, and want to hurry up and publish it, but if you take a little more time; the time you invest would be very much worth it!
Thanks for the movie =)