Dr. Quinn had a habit of taking kids in, but regardless of which of the three boys and one girl she at one point or another invited into her rustic Colorado home, the answer is no.

The beloved and long-running Western series "Dr. Quinn, Medicine Woman" started with the doctor promising her dying friend to care for her three children. Played by established child star Chad Allen and newcomers Erika Flores and Shawn Toovey, these three -- along with Jane Seymour as Dr. Michaela Quinn and Joe Lando as outdoorsman (and love interest) Sully -- formed the principal cast of the series.

However near the end of the first season, Dr. Quinn brought another motherless child into the house, an abandoned boy named Zack. After some investigation around town, it's learned that the boy's mother was a prostitute who died not long ago. It's eventually learned that the boy's father is the morally questionable saloon owner Hank Lawson.

The boy was played by a very young but already successful Joseph Gordon-Levitt. He'd already had and lost major roles on two short-lived series, the 1991 revival of the cult-classic soap "Dark Shadows" and the easily forgotten 1992 John Forsythe sitcom "The Powers That Be." However, Levitt was still three years away from finding real fame on the hit sitcom "3rd Rock From the Sun" (and a decade away from the big-screen fame he enjoys today thanks to such quirky indie hits as 2005's "Brick" and 2009's "(500) Days of Summer").    

You're not the only one to think "NCIS" star Sean Murray has a face for Westerns, though. Indeed, the mixup is understandable since the same year that Levitt was appearing in "Dr. Quinn," Murray was starring in another TV Western, the one-season dramedy "Harts of the West."

The series starred Beau Bridges as Dave Hart as an underwear salesman turned rancher. Murray, just 16 years old at the time, played his son, the improbably named Zane Grey Hart. Interestingly, one episode featured Mark Harmon as a rodeo clown, bringing him and Murray together 10 years before they'd star together on "NCIS."

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