Watch Steve Carell Scare the Crap Out of Jenna Fischer on Late-Night TV

The former co-stars reunited on Tuesday's episode of 'Busy Tonight.'

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This might be the best unboxing video yet.

During Tuesday's episode of Busy Tonight, host Busy Philipps surprised Jenna Fischer with early birthday gifts from stars of The Office. Fischer, who turns 45 on March 7, was told to open the packages and guess which of her former co-stars had sent each one. It was a piece of cake for the actress.

The gifts included a jar of Trader Joe's raisin crisps from Ellie Kemper, a T-shirt with bread loaf graphic from Angela Kinsey, as well as a banjo from Ed Helms.

"Creed (Bratton) played guitar and Ed played banjo and they would play during lunch," Fischer said.

After correctly guessing which actors sent the first three packages, Philipps directed Fischer to the last and largest parcel labeled "fragile." Fischer proceeded to lift the lid off the box, revealing the biggest surprise of the night: Steve Carell. Yup, Fischer's former TV boss jumped out of the package, causing the actress to shriek.

"Oh my god!" a visibly frightened Fischer screamed.

Once the shock wore off, the two actors hugged each other and broke out in laughter.

"I wasn't expecting a human being to be in a box," Fischer said. "And then, on top of that, I was not expecting that human being to be Steve."

You can check out the reunion in the videos above and below. The former co-stars go on to discuss a number of topics, including their current projects and a possible Office reunion. 

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