The 'Full House' reunion, which started with a Dannon Oikos Greek Yogurt commercial, is in full swing.

The male cast members -- Bob Saget as Danny Tanner, John Stamos as Uncle Jesse and Dave Coulier as Joey Gladstone -- reunited for a sketch on 'Late Night With Jimmy Fallon,' but with good reason.

Fallon was experiencing some qualms and nightmares about switching over to his role as the new host of 'The Tonight Show' next month. So it was this threesome to the rescue, dispensing advice and support from his bedside.

But the skit was filled with 'Full House' references. Jesse and the Rippers! And don't you love Stamos' leather pants? Or Coulier's acid-washed jeans? And those mullets?

Suddenly, it was 1989 all over again and TGIF programming reigned supreme on ABC! Yeah, we're dating ourselves a bit. But it was like stepping into a late '80s and early '90s time warp.

The only thing missing from this awesome and funny sketch?

Yes, the Olsen Twins.