Wasn't really a movie, but a panel set up as a reunion for Undeclared and Freaks and Geeks alumni and lasted a little under two hours. I'd give it about 8/10.
It made me appreciate This is the End even more because it became perfectly clear that Jay's part in the movie is Jay's part in real life. My gawd, they were merciless to the poor kid. Even Judd Apatow was smacking him around. Seth Rogan and Jason Segel were especially brutal. They had a long talk about how Danny McBride became an actor because of the casting of Underclared and several discussions of spin-off possibilities that never were fully explored except within the confines of the episodes they'd made.
The Freaks and Geeks segment was

. Busy Phillipps first answer she starts stuttering and then goes, "don't mind me I'm just a little drunk." A couple times she starts screaming and going, "WOOHOO! SHOTS!" And then she steals Seth Rogan's drink and just slams it mid panel. Sam Levine is still Neal. They told an incredible story about how James Franco had made up his own backstory for his character about how he didn't want there to be any physical violence between him and his girlfriend so when Busy slapped him one time he grabbed her, screamed, "DON'T YOU EVER FUCKING TOUCH ME AGAIN, BITCH!" and threw her on the ground causing this huge uproar on set and sending people scattering everywhere. Seth goes, "I remember that and just thinking, 'wait, we get to say fuck now?'" And then they did a re-enactment of the "Jesus is just alright with me" duet with Milli and Nick.

Nick still sucks.
If you were in to either of these shows, it's worth a watch. Damn funny.