Mark-Paul Gosselaar is turning 42 on March 1 and that means it’s time to bust out the day-glo fashions, hair gel and giant cell phones to fete many TV viewers’ first giant crush, Zack Morris.

RELATED: ‘Saved by the Bell’ cast reunites on ‘The Tonight Show’

Here are 41 GIFs celebrating the adorableness that was Gosselaar on “Saved by the Bell.”

MPG started out as a scrawny junior high kid:

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He was always a little weird, but in the cutest way possible.

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MPG was even cute when he was annoyed.

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In those early days, the hair was everything.

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Oh yes, it was.

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Though the winking didn’t hurt anything. *swoon*

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As he got older, MPG filled out into a handsome young man.

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He also showed off a variety of skills, like dancing:

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More dancing:

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So much dancing:

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There was also singing — Zack Attack 4EVA.

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MPG also showed off some sports skills …

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Directed movies …

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And whatever this is:

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His ’90s fashion game was also on point.

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But most important were MPG’s various relationships on the show. Kelly Kapowski was obviously his OTP.

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But watching him melt Stacey Carosi’s icy heart was a fun summer treat too.

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There were also random dalliances with both Jessie and Lisa, which was weird — and don’t even get us started on Tory.

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But the real heart of ‘SBTB’ was the bromance between MPG and Mario Lopez.

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One of the best things about MPG is his obvious affection for the show:

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So happy birthday, Mark-Paul Gosselaar.

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Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."