I have yet to hear the musical. One of my friends, who is usually more in favor of books, said that she liked the musical better than the book.
To be quoted passages from books with great romantics would be heavenly though! ^_^
A great website for Scarlet Pimpernel information is
Blakeney Manor. I found it at the SP community on Live Journal and it is wonderful. It has images, sounds, historical information, as well as online texts of the books. I'd read them more there, but it hurts my eyes to do so for such extended periods of time. It even has the listings in chronological order of how they're suppose to go, which I neglected somewhat to follow.
xd I hope this website helps you out!