I quite enjoyed The Prague Cemetery personally, but Eco can be a bit heavy going at times. Foucault's Pendulum is his best, in my opinion, it's one of my favourite books.
Book 73 Black Magic Sanction by Kim Harrison
I bought this on eBay when I was re-reading the Rachel Morgan/The Hollows series earlier in the year but have only just got round to reading it. Rachel has been shunned by the coven for dealing with demons and using black magic, and now finds that they are hunting her. She faces either life imprisonment or a lobotomy, and is understandably keen to avoid this. With lots of magic-related violence, the odd smidgeon of sex, and a lot of cunning plans, this was a pretty good outing in the series. Must order the next few, there are still several to go.