Parsons achieved fame as Sheldon Cooper, earning four Emmy awards, and being one of the more well-known characters in sitcoms.
The fans will be shocked to find out that he was close to not getting the role.
This is difficult to believe since Parsons seems perfectly suited to play the role.
Parsons himself has told Today that acting as Sheldon Cooper came naturally.
"It's surprisingly easy," Parsons told the magazine.
"I think that the writing is really good and I think that there's undeniably part of myself that understands what it is to feel outsider-y.
Probably everybody does. I think that's part of the reason the show's so successful.
But if you're just willing to access that and tap into that, it's not hard at all to feel like 'no one understands me.'"