'The Office' cast members share their favorite cold opens for 15th anniversary

It's been 15 years since the pilot of The Office aired on NBC (March 24, 2005), and after all this time the show remains one of the greatest comedies in television history.

To celebrate The Office's milestone anniversary, former co-stars Jenna Fischer (Pam Beesly) and Angela Kinsey (Angela Martin) spoke with Mashable about the show's enduring legacy, a potential reboot, and their new podcast, Office Ladies.

The two also reflected on some of the show's most memorable moments, and shared their favorite cold opens of the series.

"I know my favorite cold open," Kinsey said during a phone interview without taking a beat to think. "I will never ever forget watching the fire drill cold open in the 'Stress Relief' episode [Season 5, Episode 14]. Dwight has locked us all in the office to teach us how to survive a fire, and it's just absolute mayhem from start to finish. Everything about that opening we rehearsed with our camera operators and our crew, and it was like learning a really intricate dance. On 'action' every single little thing had to happen. It was like a domino effect."

"Save Bandit!" she exclaimed with a laugh. "How many times do you go to work and throw an enormous cat through the ceiling?"

Kinsey went on to explain that the cold open also featured an accidentally brilliant blooper. "We ran into Randall [Einhorn, one of the show's camera operators] on accident and he fell over with the camera, did sort of a somersault, and just kept going. We left it in. That was not planned."

To this day I can't watch the "Stress Relief" cold open without experiencing the kind of laughter that makes my body bounce up and down and tears leak from the corners of my eyes. So in honor of the show's 15th anniversary, let us all rewatch the mayhem unfold.

"[Stress Relief] was gonna be mine!" Fischer said before thoughtfully throwing out two other noteworthy favorites. "Hands down for me is the fire drill, but so that we're not the same, two things sprung to mind. One's when we did the lip dub, which was kind of similar because it was so fun whenever we got to break out and do something that required choreography, timing, and rehearsal."

"But having just rewatched the show I have this huge appreciation for the fitness orb cold open [Season 2, Episode 8]. I think one of the things I love about it is how we captured what was basically a blooper — with the fitness orb popping — and we kept it in," Fischer, who's partial to any cold open that includes a Jim prank, said.

"I'll never forget all of our shock and surprise when it happened and what it was like on set when the ball popped and Rainn went flying. We disintegrated into laughter."

Fans can watch The Office now on Netflix. Read our full story with Fischer and Kinsey here.