I took a break from Middlesex and Suite Francais to read my second Janet Evanovich book in just a few months. The book is an easy read; it's basically a long Q & A divided into various sections. I knew a lot of what she was talking about already, which helped me realize that I know more about writing than I think I do. It also taught me quite a bit because she writes genre novels. The questions were from readers/fans but most were quite savvy.
Although I'm on book 22 and it's pretty clear that I'm not going to make my goal of 100 books in a year, I'm very pleased with how my plan is going. I've read both fiction and non-fiction, I've read thirteen authors (so far) that I had never read before, and I've read genre, literary, and young adult literature. My real goal behind 100 books was to read more and to diversify my reading. I've already done that.
That, of course, will not stop me from trying (although I'd need to read pretty much a book a day) to complete my goal.
Oh, and hey, if you're a writer OR if you dig Janet Evanovich, check out her book How I write: Secrets of a Bestselling Author. It's infused with her humor and all of her examples are from the Stephanie Plum books!