It's been almost 20 years since family sitcom "Full House" ended, but Jimmy Fallon took viewers right back to that two-story home in San Francisco when the show's fictional band, "Jesse and the Rippers," performed a medley of their greatest pretend hits.

Led by John Stamos, who dressed in character Uncle Jesse's signature leather vest and even rocked his faux-mullet, the band jammed out to tunes like the Beach Boy's "Forever" and Elvis' "Little Sister,"—an ode to Uncle J's obsession with the king. They also sang Chan Romero's "Hippy Hippy Shake," which appeared in "Full House's" signature Disney World episode, and finally the "Full House" theme Song.

Adding to the '90s nostalgia, Bob Saget, who played "Full House" patriarch Danny Tanner, danced along in the audience and Lori Loughlin, who played Uncle Jesse's wife Becky, joined Stamos on stage after the performance for a kiss. Have Mercy!

Loughlin and Stamos were also spotted the night before catching a Broadway show in NYC.

"Fun night at The Music Box theater with my dear friend @johnstamos #pippin," Loughlin posted on Instagram alongside a sweet pic of the two.

Loughlin, who is currently married to designer Mossimo Giannulli, and the single Stamos, have both previously admitted to having a crazy sort of chemistry during their years on the "Full House" set.

"He's a really good friend of mine, I love and adore him," Loughlin recently said. "I think we have really good chemistry. We get each other. We just click."

Loughlin also admitted that the reason they never hooked up was mostly due to bad timing.

"I was actually married at the time that I was doing the show and then I got divorced," she shared. "And then when I got divorced, [John] met Rebecca Romijn and he got married."

Though both of those relationships later ended, the pair never got together; something Stamos regrets to this day.

"No disrespect to her [or] her family and husband now," he told Huff Post Live. "I would say that she could be the one that got away."

Check out the "Full House" reunion below!