While Zack Morris has been a guest on Jimmy Fallon’s show before, on last night’s Tonight Show Fallon finally put together a nearly complete Saved by the Bell reunion with Zack (Mark-Paul Gosselaar), Kelly Kapowski (Tiffani-Amber Thiessen), A.C. Slater (Mario Lopez) Jessie Spano (Elizabeth Berkley), Mr. Belding (Dennis Haskins), and Fallon as a new kid who dreams of getting on Saturday Night Live. Check out the reunion above.