This week on Pop Culture Happy Hour, NPR Monkey See’s Linda Holmes, Trey Graham, Stephen Thompson and Glen Weldon talk about ‘Looper,’ the new film starring Joseph Gordon-Levitt and Bruce Willis. What they liked, what they didn’t, and time travel movies of years past. Also, they talk about pop culture entry points. What’s the best way to introduce your favorite music, movies or tv shows to friends? All that plus What’s Making Us Happy this week.