For this chain-of-thought reasoning and answer, what was the question?
The relevant sentence in the passage is: He is known for his television roles as Zack Morris in Saved by the Bell, Detective John Clark in NYPD Blue, and Peter Bash in Franklin & Bash.
A: Mark - Paul Harry Gosselaar
Q: Mark-Paul Harry Gosselaar (/ slr /; born March 1, 1974) is an American actor. He is known for his television roles as Zack Morris in Saved by the Bell, Detective John Clark in NYPD Blue, and Peter Bash in Franklin & Bash.

Based on this passage, who played zack morris saved by the bell?