You haven't seen the "Pitch Perfect" movies? A-ca-scuse me? That's a reference you'll get when you finally sit down to watch the 2012 comedy set in the world of competitive college a cappella. For the uninitiated, that means making music without the assistance of instruments. It all comes from their mouths! 

Oscar nominee Anna Kendrick ("Up in the Air") stars in "Pitch Perfect" as Beca Mitchell, an aspiring DJ who has reluctantly enrolled at Barden University, where her father works as a professor and desperately pushes her to venture out of her comfort zone and actually have what he considers a meaningful college experience. If she still hates it, then he'll let her go to California to follow her DJ dreams. 

While at Barden, Beca ends up being recruited by the Barden Bellas, the university's all-female a cappella group led by Aubrey Posen (Anna Camp) and Chloe Beale (Brittany Snow), which...