Did you know that Pauley Perrette really does love forensic science? Or that Michael Weatherly once worked as a pizza delivery guy, and Mark Harmon was a carpenter?

Check out these fun facts about the cast of the hit CBS show "NCIS"!

Fun Facts on the 'NCIS' Cast

Mark Harmon: Married Man

Harmon married "Mork and Mindy" star Pam Dawber in 1987. They have two children, Sean Harmon, 23 and Ty Christian, 19.

Michael Weatherly: Entrepreneurial Father

Weatherly is the son of Michael Manning Weatherly, Sr., who made millions as the American importer of the Swiss Army Knife.

Pauley Perrette: Forensic Science Fanatic

Pauley graduated college with honors, studying sociology and psychology. Sheis completely obsessed with the study of forensic science.

Cote de Pablo: Miami Blues

Cote was born in Santiago, Chile, but was raised in Miami.

Sean Murray: David Lynch Fan

Murray is a huge fan of director David Lynch's work.

David McCallum: The Marriages

In his first marriage to actress Jill Ireland, McCallum had three children; Paul, Valentine, and Jason — who died of an accidental drug overdose in 1989. McCallum also has a daughter, Sophie, and son, Peter, from his second marriage to Katherine Carpenter.

Brian Dietzen: Colorado High

Dietzen graduated with a BFA in acting, the University of Colorado.

Michael Weatherly: Odd Jobs

Before his acting career took off, Weatherly sold shoes, delivered pizzas, dabbled in songwriting and also worked in the videotape library at ABC. A big part of his job there was to log and cart around one-inch reels of videotape.

Rocky Carroll: School Daze

Rocky attended the School for the Creative and Performing Arts in Cincinnati with Sarah Jessica Parker.

Mark Harmon: UCLA Bruin

Harmon graduated cum laude from UCLA in 1974, with a degree in Communications. He also played quarterback for UCLA Bruins, winning the National Football Foundation Award for all-round excellence.

Michael Weatherly: The Jessica Alba Connection

The actor was once engaged to his "Dark Angel" co-star, Jessica Alba.

Pauley Perrette: Volvo Enthusiast

Perrette owns three Volvos and praises the brand's safety record. She even tried to get her character on "NCIS: Naval Criminal Investigative Service" (2003) to drive a Volvo.

Cote de Pablo: Carnegie Mellon Girl

She attended Carnegie Mellon University in Pittsburgh, where she studied music theater and graduated in 2000.

Pauley Perrette: Punk Rocker

Pauley was the lead singer in the all-girl punk band, Lo-Ball.

Sean Murray: Big Break

His first big break came when he co-starred with Leonardo DiCaprio and Robert De Niro in "This Boy's Life." He also starred in the TV series "JAG."

Brian Dietzen: First Film

Dietzen made his big-screen debut alongside "American Idol" alums Kelly Clarkson and Justin Guarini in the 2003 "From Justin to Kelly."

Michael Weatherly: Daddy Time

Weatherly has one son, August Manning, born in 1996, with ex-wife Amelia Heinle.

Mark Harmon: Sexiest Man

Mark was chosen as People magazine's "Sexiest Man Alive" in 1986.

Pauley Perrette: Animal Lover

Pauley is very passionate about animal rescue and has two rescued dogs.

Cote de Pablo: Stuntwoman

Cote does her own stunts on "NCIS."

David McCallum: Illya Kuryakin

Of the three original stars of "The Man from U.N.C.L.E.," McCallum is the only one who never appeared on the spin-off series "The Girl from U.N.C.L.E."

Rocky Carroll: Broadway Lights

Carroll was nominated for a Tony Award for his turn in the 1990 Broadway production of August Wilson's "The Piano Lesson."

Mark Harmon: Likes to Build

Harmon worked as a carpenter before his acting career took off.

Pauley Perrette: Tattooed Lady

Perrette has a tattoo on the side of her finger which reads "12 21:, which stands for Romans, Chapter 12, Verse 21: "Never be overcome by evil, but overcome evil with good."

Cote de Pablo: Shakespearean Training

In 2001, Cote appeared in the New York City Public Theater production of Shakespeare's "Measure for Measure."

Mark Harmon: Coors Spokesman

Harmon did over 20 Coors beer commercials in the '80s.

Michael Weatherly: I'm in a Band!

While playing in the band, he began acting professionally and landed his first job as Theo Huxtable's roommate on "The Cosby Show" and a role in the indie film "Trigger Happy," opposite Rosario Dawson.

Cote de Pablo: Aspiring Singer

The actress performed a portion of Tom Waits's song "Temptation" on a "NCIS" episode. Her full performance of the song, including some lyrics in French is on the "NCIS: The Official TV Soundtrack."

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