This Week: Oscar-winner Jamie Foxx plays Django and table tennis… JEOPARDY! champ Ken Jennings answers our *etiquette* questions (minus the buzzer)… “Thrift Shop” rap stars Macklemore & Ryan Lewis spin a playful party playlist… “The Splendid Table’s” Lynne Rosetto-Kasper is haunted by the ghost of Christmas-party past… “The Hobbit” FX mastermind Joe Letteri traces Gollum’s family tree back to Sherlock Holmes… And speaking of which, Rico learns to think like Sherlock Holmes. Plus: Brazilian food rising, monkeys with no rhythm, and zen dogs.