About It's Always Sunny in Philadelphia Season 6, Episode 9 : Dee Reynolds: Shaping America's Youth

Dee takes a job as a substitute teacher and decides to take her students on a field trip to Broadway. The principal (Dave Foley) won't allow that, so it's a screening of the gang's movie---"Lethal Weapon 5"---instead. Guest Stars: Ray Auxias, Johnny Pemberton, Lauren Pennington, Paul Walter Hauser, Aneliese Roettger, Kenny Lopes, Randall Bentley, Henry Monfries, Tiffany Simone English, Dave Foley,