I heard about this film while listening to NPR. I won't even bother to summarize the film; they do a great job of that at Bubba Ho-Tep.com
The film looks odd, but as any Bruce Campbell fan will tell you, that's not so bad. If you need more than the raving fandom of a B-movie hero, please consider that the film has been highly acclaimed at numerous independent film venues. "If you see one ELVIS VS. MUMMY movie this year... This Is It!"
What I will do is send out a call to arms! There is a rumor that the Portsmouth Music Hall is considering a halloween showing of the movie. However they are afraid it may be too much of a niche. There are only a few 35mm reels of the film in the US, so they need to know who their audience is before they commit.
So call them or email them and cast your vote!