I have to get this out of the way...the consensus is wrong! Unoriginal? Yes, there have been party movies before, but none that get as crazy as this one! And "predictably mean-spirited debauchery?" This movie was not predictable! And there was nothing mean spirited! It was Thomas's birthday, and his friends wanted to throw a party! Anyway, now my thoughts! I guess I am in the minority because I loved every second of this movie! I thought there were plenty of laughs, and there were great performances all around, as well as interesting characters! Everything else was also great. And it all ended with a great finale! Overall, I honestly loved everything about this movie, and loved watching it the whole time! I think it is perfect!