I finished Curse of the Spellmans by Lisa Lutz and loved it! The Spellman family is one of the funniest I've ever read. Izzy(older sister) and Rae(youngest Spellman) both have the driest wit and I love the interactions between Izzy and her parents. Izzy's parents still see her as the screw-up she was in high school no matter how much she has changed. You see a bit more of Izzy's "perfect brother" David in this book. He is usually much more serious than any of the other Spellman's, but is going though a bit of a life change it this book.
The actions of the Spellman family makes you want to read the next adventure of the Spellmans as soon as this one is over.