Mark-Paul Harry Gosselaar (born March 1, 1974) is an American actor. Gosselaar is perhaps best known for his roles as Zack Morris on NBC's Good Morning, Miss Bliss, Saved By The Bell, and Saved By The Bell: The College Years, and detective John Clark on NYPD Blue. In 1998, he starred in his first feature film Dead Man on Campus. After NYPD Blue ended, he joined the cast of ABC's Commander in Chief, starring Geena Davis; however that series lasted only one season.
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