When three friends finally come to after a raucous night of bachelor-party revelry, they find a baby in the closet and a tiger in the bathroom. But they can't seem to locate their best friend, Doug – who's supposed to be tying the knot. Launching a frantic search for Doug, the trio perseveres through a nasty hangover to try to make it to the church on time.
Bradley Cooper
as Phil Wenneck
Ed Helms
as Stu Price
Zach Galifianakis
as Alan Garner
Justin Bartha
as Doug Billings
Heather Graham
as Jade
Sasha Barrese
as Tracy Garner
Jeffrey Tambor
as Sid Garner
Ken Jeong
as Mr. Chow
Rachael Harris
as Melissa
Mike Tyson
as Mike Tyson
Mike Epps
as Black Doug
Jernard Burks
as Leonard
