| cast |
 |
|
|
|
| Todd Phillips | Todd Phillips Director | Aedin Mincks | Aedin Mincks as Young Alan Garner |
| Bradley Cooper | Bradley Cooper as Phil Wenneck | Dylan Boyack | Dylan Boyack as Young Doug Billings |
| Ed Helms | Ed Helms as Stu Price | Jamie Chung | Jamie Chung as Stu's Fiancée |
| Justin Bartha | Justin Bartha as Doug Billings | Ken Jeong | Ken Jeong as Mr. Chow |
| Liam Neeson | Liam Neeson as Tattoo Man | Mike Tyson | Mike Tyson as Self |
| Sondra Currie | Sondra Currie as Linda Garner | Tanner Maguire | Tanner Maguire as Young Phil Wenneck |
| William A. Johnson | William A. Johnson as Young Stu Price | Zach Galifianakis | Zach Galifianakis as Alan Garner |