Ever watch a video and notice that you have a stupid smile on your face the entire time you were watching it?

Five of the original cast members from "Saved By The Bell" joined Jimmy to recreate their former roles in what is possibly the best eight minutes of programming to ever be aired on NBC. 

Zack Morris (Mark-Paul Gosselaar), AC Slater (Mario Lopez), Jessie Spano (Elizabeth Berkley), Kelly Kapowski (Tiffani Thiessen), and Mr. Belding (Dennis Haskins) all donned their iconic '90s garb to join Fallon in a re-creation of his time spent at Bayside High School.

Screech (Dustin Diamond) wasn't able to make it. That's probably due to a combination of him not being invited in the first place, writing a book wherein he talked trash about all of his former castmates, and the fact that he's likely still in jail following an altercation at a Wisconsin bar where he pulled a switchblade on someone.

The eight-minute clip contains references to all of our favorite moments from Bayside including Slater ballet dancing, Jessie's "I'm so excited!" meltdown, and even an impromptu performance from everyone's favorite band, Zack Attack.

Is it just me, or do none of them actually age? It's kind of crazy that, 25 years later, they all look exactly the same!