"Sometimes the greatest change brings about even greater opportunity! Look at you, Lawrence. You left this place and created quite a life for yourself."

"Frankie Jonas - little boy in museum (uncredited)"

"Jonah Hill - Brandon (pronounced "Brundon") (uncredited)"

"Thomas Lennon - Orville Wright (uncredited)"

"Ed Helms - Larry's assistant at Daley Devices (uncredited)"

"Kennith Overbey - Tuskegee Airman #3 (uncredited)"

"Craig Robinson - Tuskegee Airman #2"

"Keith Powell - Tuskegee Airman #1"

"Shawn Levy - Infomercial father"

"George Foreman - himself"

"Charles Fleischer - Roger Rabbit (voice)"

"Carroll Spinney - Oscar the Grouch (voice)"

"[to Oscar] You don't seem to be evil, you seem to be more of a grouch. [Darth Vader holds his hand up with a pinching motion] What is that? What is that? What does it mean? I don't know... you've lost me. Is that your breathing? Because I can't hear myself think. [pause] Let me tell you kindly, just simplify. There's too much going on! You're not evil, you're asthmatic, and what's with the cape? Are we going to the opera? I don't think so. Goodbye! [Darth Vader and Oscar the Grouch leave]"

"Some are born great, others have greatness thrust upon them."

"Eugene Levy - Einstein Bobbleheads (voice)"

"Jonas Brothers - Cherubs"

"Brad Garrett - Easter Island Head"

"Jay Baruchel - Sailor Joey Motorola"

"Robin Williams - Theodore Roosevelt (statue) and Theodore Roosevelt (bronze bust)"

"Mizuo Peck - Sacagewea"

"Rami Malek - Ahkmenrah"

"Jake Cherry - Nicky Daley"

"Patrick Gallagher - Attila the Hun"

"Jon Bernthal - Al Capone"

"Bill Hader - Gen. George Armstrong Custer"

"Ricky Gervais - Dr. McPhee"

"Steve Coogan - Octavius"

"Alain Chabat - Napoleon Bonaparte"

"Christopher Guest - Ivan the Terrible"

"Hank Azaria - Kahmunrah/The Thinker/Abraham Lincoln"

"Owen Wilson - Jedediah"

"Amy Adams - Amelia Earhart/Tess"

"Ben Stiller - Larry Daley"

"We're Americans, we don't plan, we do!"

"Larry Day - FBI Agent Miller"

"Bjanka Murgel - Arm Candy"

"Aubert Pallascio - Tiberiu Bulat"

"David Vadim - Cristu Bulat"

"Keram Malicki-Sánchez - Ink"

"Mark Camacho - Pittsy"

"T.J. Storm - Maginty"

"Tony Calabretta - Saffiotti"

"Ron Lea - NYPD Captain Ross"

"Stephanie Janusauskas - Grace Donatelli"

"Romano Orzari - Nicky Donatelli"

"Wayne Knight - Linus Lieberman / Microchip"

"Dash Mihok - NYPD Detective Martin Soap"

"Doug Hutchison - James Russoti / Loony Bin Jim (LBJ)"

"Colin Salmon - Paul Budiansky"

"Julie Benz - Angela Donatelli"