'Saved by the Bell' Reboot: Mark-Paul Gosselaar on Reprising Zack Morris Role (Exclusive)

ET’s Nischelle Turner spoke with Mark-Paul Gosselaar on video chat about the season finale of ‘Mixed-ish,’ and he reacts to the trailer for the reboot of ‘Saved by the Bell.’ Gosselaar also revealed that he didn’t have a chance to jump back into Zack Morris before production shut down, but he’s thrilled about not having to dye his hair again!