Nick Cannon and Howie Mandel

HYPOCHONDRIAC: What starts out as simple exercises in staying healthy quickly turns into a series of obsessive procedures, as our contestant finds creative ways of keeping the germs at bay. Co-host: Howie Mandel. BEST MEDICINE: When a contestant starts acting goofy after taking a mystery pill, her brother must try and stop her from grazing on the décor, and blowing on his belly button. Co-host: Nick Cannon