I've been raised on it (well the film) since I was 4, so be warned. (actualy that may clear up some things you were woundering about me)
Factlets:
Richard O'brian may have written it but he no longer holds to touring rights in the USA because german pop sensation and car driving actor the Houffmister baught the rights so he could play Frank.
Richard still ocasionaly dose guest apearances but only as Frank.
In a statment Richard made at the 25th ani convention in Vegas (I was there

) there was the implication that Jannet (Slut) was left pregnant at the end and that he was working on a sequil.
There was already a sequil of sorts called "Shock Treatment" but that was so totaly crap (worse than Evangelion's ending) that we must never talk about it.
Unfortunaly there are no confirmed dates for a stop in derby.
The closest ones are:
Date: Tuesday 2nd to Saturday 13th May, 2006
Venue: Birmingham Alexandra Theatre
Box Office: 0870 607 7533
Date: Monday 12th to Saturday 17th June, 2006
Venue: Manchester Opera House
Box Office: 0870 401 9000
Date: Monday 25th to Saturday 30th September, 2006
Venue: Regent Theatre, Stoke on Trent
I'm planning on going to the Stoke one on the Saterday, it looks like Frank will be played by the man who did Satan in the Jerry Springer Opera, he was good and the part's arn't that different.