Doolittle, especially when he's taking care of Kate.
Grendel, the attack poodle. He will eat your car and throw up on your rug.
Andrea in Gunmetal Magic: "This is the hand that slapped Aunt B. Here, you can touch it, since you're my best friend."
Saiman adding his own touch to the security video of Curran demolishing his fleet of sportscars barehanded: he set it to the tune of "Kiss From A Rose" by Seal.
During a conversation with Aunt B, Kate learns she's getting the 'cookie' of bringing Andrea and Raphael to Europe with her. Then she learns Aunt B is coming too and thinks "Dear God, the cookie was poisoned!"