TODAY April 17, 3rd Hour: Today’s Checklist: Cleaning Out Your Medicine Cabinet | Catching Up with John Lithgow | “Wimpy Kid” Author Transforming his Town

NBC News Medical Contributor Dr. Kavita Patel shares a simple system of the most efficient way to clean out your medicine cabinet. Also, John Lithgow stops by to discuss his role as Roald Dahl in the new Broadway show “Giant”. Plus, how Jeff Kinney, author of the incredibly popular “Diary of a Wimpy Kid” book series, and his wife are on a mission to give back to their community. And, TODAY nutrition and health expert Joy Bauer shares three recipes to beat that afternoon slump.