Is it okay to yell ‘boo’ in an crowded opera house? Have you ever thrown things on a ball field or hockey rink? And when should you share your personal opinions of a film in a movie theater aloud? Whether or not you’re reading this on your smartphone in a dark theater, you may be interested to hear what our guests have to say. DAVID FOX, a lecturer at the University of Pennsylvania, pondered in an op-ed in the New York Times recently if booing in theater should make a comeback. The “Booing Santa in Philly” legend follows the Philadelphia Eagles every year into the winter season. Longtime sports fan, former Pennsylvania Governor ED RENDELL, will join us to talk sports fans – he has years of playing down his relationship to snowballs and the field. PIERS MARCHENT, film critic for NBC and two.one.five magazine, will share movie house anecdotes of deafening silence, cheering and abusive cell phone use. Then ANNA POST, great-great-granddaughter of etiquette maven Emily Post, will weigh in about how people should usually hold their comments in at public venues. Or at least wait until you’re out of earshot from the performers.