Johnny Galecki Revisits His 'Roseanne' Roots -- See the On-Set Pic!

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Johnny Galecki hasn't forgotten his roots!

The 42-year-old actor took to Instagram on Friday to share a pic from his return to Roseanne, calling the experience one of the "most surreal" of his life. 

"21 YEARS LATER...! Apart from being born, possibly the most surreal experience of my life," Galecki captioned a pic of his name card on the on-set table read. "Deep thanks to my Big Bang Theory family for knowing the importance of visiting one’s roots and loaning me out for a quick minute. Much ❤️."

While the actor currently stars on TheBig Bang Theory, he was able to return to Roseanne for one episode, and started rehearsals on Tuesday. 

"We have got our Johnny Galecki back on Roseanne this episode - what a joy to work with such a deeply empathetic actor,” Roseanne Barr tweeted on Tuesday. “Very moving 4 all of us. #JOY.”

Galecki's onscreen wife, Sara Gilbert (who plays Darlene to his David Healy), told ET in September that the show was trying to get him on board. 

"We're in very productive, amazing talks and we're hopeful that it will work out," she shared.

See more in the video below. 

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