Friends forever! The Saved by the Bell gang reunited for The Tonight Show on Wednesday, making every '90s kid's dream come true, and including a ton of references to the original show. Mark-Paul Gosselaar, Tiffani Thiessen, Mario Lopez, Elizabeth Berkley, and Dennis Haskins channeled their Bayside characters for the late-night show, posting pictures together backstage. Mario captioned one photo, "My boy Mark-Paul and I picking up where we left off," while Elizabeth gave a nod to Jessie Spano with the hashtag #imsoexcited. Fellow cast members Dustin Diamond and Lark Voorhies were absent, and Lark's publicist told E! News, "Lark would have loved to be part of the Jimmy Fallon skit (as she is a big fan of the show), however due to an intense work schedule she was not available." Check out the full reunion video below, and then take a look at all the pictures of Zack, Kelly, AC Slater, Jessie, and Mr. Belding back together "#25yearslater!"