EXCLUSIVE: Behind the Scenes With 'Fuller House' Stars as Dave Coulier Makes His 'Serious' Directorial Debut

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Only ETonline's Ashley Crossan was behind the scenes of Fuller House as the Tanner family decked the halls for a special episode directed by Dave Coulier.

"The episode is called 'The Nutcrackers,' and so we are choreographing The Nutcracker down on our stage down there," Coulier told ET. "We got babies; we got dogs; we got special effects going on this week. We got a lot of stuff going on."

WATCH: Candace Cameron Bure & Jodie Sweetin Talk 'Fuller House' Season 2's 'Throwback Guest Stars'

This marks the actor's first time in the director's chair, and there couldn't have been a better place for him to make his directorial debut.

"We are like a real close-knit family," Coulier told ET. "It's the perfect place for me to come back and tell everyone where to go."

Coulier went on to joke about the experience being less than ideal.

"I get fired right after we're finished with this episode," he quipped.

WATCH: EXCLUSIVE -- Candace Cameron Bure on Fuller House's 'Generations' of Fans and Her Teenage Crush

The rest of the cast weighed in on Coulier's transition from telling jokes in front of the camera to calling the shots behind it.

"It's really strange for us to see Dave so focused and serious," Jodie Sweetin admitted.

But Cameron Bure wasn't shocked by Coulier's sober demeanor.

"I've seen this side of Dave before, because he's also a pilot and when he flies he is the same way," she explained.

Fuller House returns in full holiday mode, complete with mistletoe, adorable Christmas portraits with Santa and plenty of romance drama. The show throws fans for a loop when it's revealed that Stephanie (Sweetin) is dating Kimmy Gibbler's (Andrea Barber) younger brother, Jimmy (Adam Hagenbuch).

"I just kissed a Gibbler?!" Stephanie exclaims in the trailer. "Ew!"

But the most anticipated moment is an appearance by New Kids On The Block. And no one was looking forward to it more than Cameron Bure, Sweetin and Barber.

WATCH: New Kids On The Block to Appear on 'Fuller House,' Cast Adorably Geeks Out

"My No. 1 dream guest star for 30 years has been New Kids On The Block," Barber told ET.

"I cried reading the script," Cameron Bure admitted. "I'm not even lying."

The guest spot is especially appropriate given Fuller House's shout-out to the band during season one, when the ladies all learned a piece of the choreography from their hit, "You Got It (The Right Stuff)."

Season two of the Netflix series begins streaming this Friday.