that's funny. I was thinking about Foucault's pendulum myself, except I didn't technically read it - not more than the first couple of chapters anyway, just couldn't get through it. And I did so enjoy the Name of the Rose
I was the same way. I liked Name of the Rose so much I couldn't wait to read Foucault, but after 2 chapters had to give up.
I read and enjoyed Name of the Rose until that damnable Movie Ending. It struck me that the whole thing was about hoping to sell movie rights.