"House"-hold name: Jayma Mays as Hannah. "House"-lights: Hannah suffers from severe insomnia. So severe, in fact, that over the course of two weeks, she has only slept in 10-second bursts that her brain cannot even register. She ends up having contracted the bubonic plague from her dog's fleas and takes part of her boyfriend's liver even though she was planning on dumping him. It turns out he knew that and donated his liver so she wouldn't leave him. Out-"House": Jayma Mays did "House" before she went on to charm Hiro on "Heroes" and Mr. Schuester on "Glee."