This is an Amy Poehler and Tina Fey comedy about two wacky sisters who stage a high school-style rager, and invite all their now late-40s high school friends, when they find out their parents (Dianne Wiest and Barry Bostwick) are selling the family home.
As I mentioned, it almost lost me before it really got going but came around quickly. So, after a bit of a faulty start this turns into exactly the kind of Apatow-esque adult rauch-comedy you'd expect it to be.
Also, there's a dance sequence.
4/5