Matt Lauer celebrates 20 years on 'Today' Show with Katie Couric and Savannah Guthrie

It was if no time had passed when Katie Couric reunited with Matt Lauer on the Today show, and was on hand to celebrate his 20th anniversary on the morning show.

On Friday, Couric posted a video of herself and longtime Today show weatherman, Al Roker, bursting into Lauer's dressing room to wish him a happy anniversary through song. "Celebrating @mattlauernbc's 20th anniversary on @todayshow!!! (Check out my story for the first take of this video 😝) #happyanniversary #theflintstones #happyfriday #ML20," she captioned the video.

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See photos of all of the "Today" show anchors through the years:

Couric -- who's been filling in for Today's Savannah Guthrie all this week while she's on maternity leave -- co-anchored the NBC morning show from 1991 to 2006, and was there for Lauer's first day on the job. "It was extremely natural when Matt first stepped into the chair," Couric recalled in a segment dedicated to Lauer's most memorable Today moments. "He just crushed it right away."

"What can I say, he had me at good morning," she added.

"It's not about him," Roker said of working with Lauer. "He wants his team to look good."

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Guthrie -- who welcomed her second child last month -- made a surprise return to Today to celebrate with Lauer and also posted a heartfelt tweet to her co-anchor. "Sending all kinds of love to @MLauer on his 20th @TODAYshow anniversary," she wrote. "A class act, great friend and once in a generation talent."

Today couldn't help but share some flashback moments of the 59-year-old newsman, including his infamous sit-down with Tom Cruise and his array of interviews over the years. Couric also pointed out that during his time on Today, Lauer has met with 10 presidents, covered nine Olympics and has visited more than 60 countries.

Today show viewers can expect to see a lot more of Lauer. ET confirmed in November that he re-signed his contract with NBC and is earning a salary of $20 million a year. He is to stay on with the network until at least 2018.