Pretty good
I liked it. It was very funny and creative. The only thing was that the quality was very low for such a short movie. The special fx were good and must have taken a hell of a long time to animate.
I also do claymation, so I know that it is not necessary to lower the qualiy to that low. Just export it as an .AVI and import into Windows Movie Maker and than export it from Windows Movie Maker and it will make the file size go down a whole lot. And than import it back into flash and lower the file size to Flash 8 medium quality or something around that and export the .Swf and it should be pretty low file size with much better quality than this was.
But quality doesn't express the authors skill, which you have a lot of.
Good Job