'Weird Al' Yankovic
Self / Phineas Gage
Billy West
Norm the Owl / Billy the Brain (voice)
Tim Heidecker
Brain Stretcher
Eric Wareheim
Patton Oswalt
Co-Worker
Thomas Lennon
Paul McCartney
Man on the Street
Fabio
Bob Bancroft
Norm Kozlovsky
Michael William Arnold
Timmy
Ezra Buzzington
Homeless Guy
