Effective
This flash film was plenty effective at getting its point across. It's a humorous tribute to the Weebl, and Harry Potter. As has been said, it was a good idea. However, with just a little more effort, it could have been more than just a good idea. I think that the biggest improvement would have been to add some music. Then, just refine it a bit, and make sure it loops smothly. In this way, it would have been a proper parody, instead of a quick joke.
I realize this is an old flash, though. I also realize that it was probably not intended to be more than a quick joke. It succeeds at being funny, so I will give it what I think it deserves.