Bradley Cooper; Ed Helms; Zach Galifianakis; Ken Jeong; Heather Graham

Oliver Cooper; Jonathan Daniel Brown; Dax Flame; Alexis Knapp

Ricci, Christina; Lloyd, Christopher; Huston, Anjelica; Julia, Raul; Cusack, Joan; Kane, Carol; Struycken, Carel; MacNicol, Peter; Baranski, Christine; Workman, Jimmy; Hart, Christopher; Ivey, Dana

Matt Lanter ; Jenn Proske ; Chris Riggi

Rose Byrne; Zac Efron; Christopher Mintz-Plasse; Dave Franco; Ike Barinholtz

Oliver Cooper; Jonathan Daniel Brown; Dax Flame; Alexis Knapp

Robert Downey Jr.; Zach Galifianakis; Michelle Monaghan; Juliette Lewis; Jamie Foxx

Adriano Celentano ; Ornella Muti ; Edith Peters

Anna Kendrick; Skylar Astin; Ben Platt; Rebel Wilson; Brittany Snow

Steve Martin ; Jean Reno ; Alfred Molina

Hasselhoff, David; Darby, Rhys; Bieber, Justin

John Travolta ; Tim Allen ; Martin Lawrence

Scarlett Johansson, Kate McKinnon, Jillian Bell, Ilana Glazer

Rose Byrne; Zac Efron; Christopher Mintz-Plasse; Dave Franco; Ike Barinholtz

Jason Segel, Ed Helms, Susan Sarandon

Matt Lanter ; Jenn Proske ; Chris Riggi

Mastroianni, Marcello; Muti, Ornella; Piccoli, Michel; Araya, Zeudi; Capucine

Meryl Streep ; Steve Martin ; Alec Baldwin ; Nora Dunn ; Rita Wilson

George Clooney ; John Turturro ; Tim Blake Nelson