An American Carol

Kevin Farley

Michael Malone

Kelsey Grammer

General George S. Patton

Leslie Nielsen

Osama Bin Nielsen / Grandpa

Trace Adkins

Angel of Death

Robert Davi

Aziz

Geoffrey Arend

Mohammed

Travis Schuldt

Josh

Jon Voight

President George Washington

James Woods

Todd Grosslight

Dennis Hopper

Judge Clarence Henderson

Kevin Sorbo

George Mulrooney

Bill O'Reilly

Himself

David Alan Grier

Rastus Malone

Gary Coleman

Slave

Christopher McDonald

Lab Technician

Serdar Kalsin

Ahmed

Oliver Muirhead

Neville Chamberlain

Karri Turner

Lab Tech 2

Alaina Huffman

Celebrity 1

Paris Hilton

Paris Hilton