Remember watching Nickelodeon's SNICK as a kid? 

Well to celebrate former "All That" star Keenan Thompson's 36th birthday today, we decided to see what he and the rest of our favorite childhood stars have been up to. 

Keenan, Kel Mitchel and Amanda Bynes were just a few to break out from the Nick variety show ... but what happened to their costars?

Well, one of them officiates weddings now!

And what about shows like "The Secret World of Alex Mack," "Clarissa Explains It All," "Are You Afraid of the Dark?" and "Hey Dude" ... yep, we tracked down the stars of those shows too.

Get ready to take a trip back to the '90s and see what some of your very first crushes look like today!

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