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Wayne Elliot Knight (born 7 August 1955) is an American actor. In television, he played Newman in Seinfeld (1992–1998) and Officer Don Orville in 3rd Rock from the Sun (1996–2001). His other television roles include Mr. Blik in Catscratch (2005–2007) and Haskell Lutz in The Exes (2011–2015). He also voiced Jack O'Lantern in The Grim Adventures of Billy & Mandy (2000–2008), Zurg in Buzz Lightyear of Star Command (2000–2001), and Dojo in Xiaolin Showdown (2003–2006).

In film, he played Dennis Nedry in Jurassic Park (1993), which earned him a Saturn Award for Best Supporting Actor nomination. Knight also portrayed Numa Bertel in JFK (1991), Stan Podolak in Space Jam (1996), Zack Mallozzi in Rat Race (2001), and Microchip in Punisher: War Zone (2008) and provided voiceover work for Al McWhiggin in Toy Story 2 and Tantor in Tarzan (both 1999).


Knight voiced Dr. Crewrieds, the professor and judge of the science fair in Wednesday's school in The Addams Family 2.