US-ENTERTAINMENT-TELEVISION-EMMYS-ARRIVALS"Full House" fanatics will remember that the Beach Boys seemed to pop up on the sitcom all the time, and John Stamos stoked that nostalgia this weekend thanks to a surprise appearance with the rockers at the Los Angeles County Fair.

Of course, Stamos wasn't just reliving his Uncle Jesse glory days; in fact, the reason the band appeared so often on the show -- including a memorable season two episode where D.J. won tickets to their concert, and then the entire extended Tanner clan came up on stage to jam with the band -- is because Stamos is actually friends with the Boys. The actor toured occasionally with the band throughout the 1980s, and even appeared in their music video for "Kokomo"; he's popped up at multiple other concerts with them over the years, too.

So it makes sense, then, that Stamos would stop by for another impromptu performance with the Beach Boys this weekend, his first since completing a stint in rehab this summer. At the concert, he played drums, bongos, and guitar, and helped sing along to tunes including "Kokomo" and "Why Do Fools Fall in Love." He was introduced to the crowd with images of Uncle Jesse that flashed on the big screen, much to the delight of the crowd.

Check out some photos and videos from the event below, and keep your fingers crossed that the Beach Boys make a cameo on "Fuller House," too.

ON the drums.

A photo posted by John Stamos (@johnstamos) on

A photo posted by John Stamos (@johnstamos) on

[via: John Stamos, The Hollywood Reporter]

Photo credit: AFP/Getty Images