This music video is so amazing it shows up on Internet Movie Database
IMDB
List of cameos on the video, grouped and by order of appearance:
Seth Rogen, Danny McBride, and Elijah Wood
Susan Sarandon and Stanley Tucci
Rashida Jones
Will Arnett
Adam Scott
Rainn Wilson
Ted Danson and Steve Buscemi
Amy Poehler, Roman Coppola, Shannyn Sossamon, Mary Steenburgen, Alicia Silverstone, Laura Dern, Milo Ventimiglia, and Jody Hill
Jason Schwartzman
Chloë Sevigny, Kirsten Dunst, and Maya Rudolph
David Cross
Orlando Bloom
Will Ferrell, John C. Reilly, and Jack Black
Adam Horovitz, Mike D, Adam Yauch and Martin Starr
Source: Vulture
