Dunno if this helps but please feel free to steal my ideas:
I've done two talks about Evil Dead, the first in 1990 scored badly as the film was still controversial at the time and my snooty lecturer didn't agree that Sam Raimi would ever amount to anything.
The second was a roaring success at, of all places, a nurse training college in (I think) 2001. As the BOTD edition of the DVD had not long been released, I printed off a few of Tom Sullivan's 'Bullscrit' font (that he used in the BOTD) alphabet sheets that a member here (I think Morsoth) had translated and created for this site. I wrote 'It's only a movie' in the bullscrit font at the bottom of each alphabet sheet and handed them round to each member of the class before my talk began with the promise that the first person to translate it would get an Evil Dead prize (a BOTD DVD ... yes. Bribing my way to a good mark!... a girl won but equally craftily gave it to our happy lecturer).
I began by explaining that I was mad about The Evil Dead ....
The first third of my talk dealt with the pre-production history of The Evil Dead, the struggles to raise cash, Sam Raimi's age at the time, Palace Pictures picking it up for distribution, Stephen King's praise, then I went onto the Department of Public Prosecution's attempts to have it banned and subsequent failiure to do so at Snaresbrook Crown Court in England, the conservative government egging the newspapers to name and shame it as a 'video nasty' and ended this part of the talk with the happy ending that it was now available un-cut in all large stores.
The second third of my talk dealt with the subsequent cult status that The Evil Dead earned itself at the time which had grown a lot larger with the help of the internet and, later, the release of the Hail To The King playstation game. I'd prepared some acetate prints (because we had a classroom flat projector at our disposal) of fan art from this site and others. As I remember, they were Homer Simpson Ash, Shaggy 'Scooby Doo' Ash, anime and Fine art Ash which got a few chuckles. I also mentioned the dark side of the books bound in human flesh legend, mentioning the notorious Nazi Illse Koch, the 'Bitch of Buchenwauld' and her habit of skinning mostly tatooed Jewish P.O.W.'s and binding her household objects with the skin.
The last third involved my dragging out some of my collection (toys, books and crap like that) to further illustrate the films standing in popular culture. I ended it all by pulling out a brick from the cabin chimney, explaining what it was and saying something like "I know to you this may just look like a regular brick, but to me it's a bit of magic" which got a few warm laughs. It was a strictly five minute talk (which we were also marked on for obeying or disobeying) so I rehearsed it a few times in front of a clock.
I think the musical would fit nicely into a fan art discussion section, but I wouldn't dwell for too long on it at the expense of the rest of the fan scene. Good luck matey.
