Millennial hearts are singing today: (Most of) the cast of "Saved by the Bell" has reunited!

Jimmy Fallon brought together Mark-Paul Gosselaar, Mario Lopez, Elizabeth Berkley, Tiffani Thiessen and Dennis Haskins (Zack, Slater, Jessie, Kelly and Mr. Belding, respectively) on Wednesday's "Tonight Show" for a reunion sketch.

It appeared as if Fallon was pinch-hitting for Dustin Diamond, who has been charged in Wisconsin after allegedly stabbing someone in a bar fight. Lark Voorhies, who played Lisa, was also absent.

The sketch brought out some of "Saved by the Bell's" most oft-repeated lines: Zack called a "time out," Slater danced ballet and Jessie sang "I'm so ... scared!" As for Kelly, the sketch incorporated Thiessen's real-life pregnancy.

This is just the latest in the star-studded events in Fallon's "Tonight Show" field trip to L.A. On Monday, he recreated the "Fresh Prince" theme song to describe why he left for L.A., and on Tuesday, Neil Young joined him to sing "Old Man." After the Super Bowl on Sunday, Fallon stopped at the Orpheum Theatre in Phoenix, where he performed an epic lip sync battle with Will Ferrell and Kevin Hart.