This week on Pop Culture Happy Hour, NPR Monkey See’s Linda Holmes, Stephen Thompson, Glen Weldon and special guest Chris Klimek journey into “The Hobbit: Desolation of Smaug” and the world of movie sequels. What makes them worth it and how do movies like “Breakin’ 2: Electric Boogaloo” even happen? Then, they’ll get into the holiday spirit by talking about Christmas music — the good, the bad and the ugly. Guest Chris Klimek dissects his recent article on why it’s so difficult for a new Christmas song to enter the pop culture canon. All that plus What’s Making Us Happy this week.