The Rt. Hon. Christopher Haden-Guest, 5th Baron Haden-Guest, better known as Christopher Guest, is an American-born screenwriter, composer, musician, director, actor and comedian. He is most widely known in Hollywood for having written, directed and starred in several improvisational "mockumentary" films that feature a repertory-like ensemble cast, such as This is Spinal Tap...(Wikipedia)

Clarence J. "Clancy" Brown III is an American actor and voice actor known for his roles as Byron Hadley in the award winning The Shawshank Redemption, Career Sergeant Zim in Starship Troopers as well as for his role as the Kurgan in the cult classic Highlander. Brown also works extensively as a voice actor in animated TV series, notably portraying Lex Luthor on Superman: The Animated Series, Krypto the Superdog and Justice League/Justice League Unlimited... (Wikipedia)

Credits include: Elephant Sighs, L.A.dy Dior, Safe Deposit Krabs/Plankton's Pet, Banned in Bikini Bottom/Stanley S. SquarePants and Fear of a Krabby Patty/Shell of a Man

Credits include: The SpongeBob SquarePants Movie, Heavy Metal, The SpongeBob Movie: Sponge Out of Water, SpongeBob SquarePants and The Real Ghostbusters

Credits include: The SpongeBob SquarePants Movie, The SpongeBob Movie: Sponge Out of Water, SpongeBob SquarePants, The Madagascar Penguins in: A Christmas Caper and The SpongeBob Movie: Sponge on the Run

Credits include: Star Wars: The Clone Wars, Batman: The Dark Knight Returns, Part 1, The Legend of Korra, American Dad and SpongeBob SquarePants

Credits include: The SpongeBob SquarePants Movie, Serial Mom, Saving Bikini Bottom: The Sandy Cheeks Movie, Legend of the Mummy and Carol Channing: Larger Than Life

Credits include: Family Guy Presents: Stewie Griffin - The Untold Story, Small Fry, Fantastic Four, Larry & Steve and The King Is Dead

Credits include: The SpongeBob SquarePants Movie, The SpongeBob Movie: Sponge Out of Water, SpongeBob SquarePants and Saving Bikini Bottom: The Sandy Cheeks Movie

Credits include: Gravity Falls, Korgoth of Barbaria, The Secret Box/Band Geeks and Shanghaied/Gary Takes a Bath

Credits include: Truth or Square, Frozen Face-Off, The Dabba Don and Safe Deposit Krabs/Plankton's Pet

Credits include: It's a SpongeBob Christmas!, Truth or Square, Spy Buddies/Boat Smarts/Good Ol' Whatshisname and SpongeBob, You're Fired