No, you haven't time-warped back into the early '90s -- but Mark-Paul Gosselaar has!
The actor transformed himself back into Saved By the Bell's Zack Morris for an appearance on Late Night with Jimmy Fallon last night -- and, wow, he hasn't aged a bit!
Zack Attack caught the talk show host up on what he's been up to, telling Jimmy, "It's been a long strange trip since my days at Bayside, but hey, I can't complain." He even talked about his romance with Kelly and played with the house band.
I love when an actor pays homage to the roles that made them famous in the first place. Ya hear that, Luke Perry?