For example, "Hurricane" Helms is still in this version of the game.
Todd Phillips, who is also the director of the film, is credited for bringing the three main stars, Bradley Cooper, Zach Galifiankas and Ed Helms together as the three best friends and adding Justin Bartha as the lost groom.
Actor Ed Helms is well known for his role as Andy on the hit TV show, The Office.
Helms was also a regular on The Daily Show with Jon Stewart.
Helms is also confirmed as reprising his role in The Hangover 2.