Only a few short-comings
I really love Army of Darkness. Bruce Cambell is like my favorite actor. However, there are two things that I didn't like about your flash. Nothing too horrid but just kinda ticked me off 'cause I love the movie so much.
1. He didn't say the "words".
2. You cut the storyline short (this is understandable as an extremem amount of effort would have been required to do the fighting and all that stuff)
I loved the movie sound bytes though, but there should've been more 'Ash key phrases' (eg. Boomstick, Primates, etc)
Good job though overall I enjoyed it.