Mayim Bialik was a guest star on One The Big Bang Theory

Chuck Lorre and Bill Prady's 2007 sitcom The Big Ban Theory was discussed on air. In the early 2000s, certain types of “geek” interests moved from the fringes of culture directly into the mainstream, with previously derided niche interests such as Dungeons & Dragons, comics, long-form video games, astronomy, trivia, and fantasy. in general everything became widely accepted as a new age of entertainment. New child-friendly pop artists were canonized. The geek ecosystem was widespread and easily accessible to anyone curious.

However, some viewers criticized “The Big Bang Theory” for its inaccurate depictions of modern ponds. The Big Bang characters were all scientists or intellectuals, and they all liked Star Wars, comic books, and RPGs, but they didn't talk the way geeks did, nor did they organically celebrate geek culture. The Big Bang Theory relied too heavily on outdated dweeb stereotypes left over from 1984's Revenge of the Nerds and didn't do enough to update its ethos to match reality.

But despite the criticism, the show was very successful. Like, VERY successful. Successful enough to maintain high ratings for 12 consecutive seasons. And whether they're right or not, some legitimate giants of the geek world have appeared on the show for cameos, usually just to make the main characters cringe. Stan Lee, Stephen Hawking, Neil deGrace Tyson, Bill Nye, Steve Wozniak, Nathan Fillion, George Takei, Leonard Nimoy, Wil Wheaton, LeVar Burton, Brent Spiner, Carrie Fisher, James Earl Jones and Buzz Aldrin appeared.

Mayim Bialik played Amy Farrah Fowler on The Big Bang Theory, which is now in its third season, and had the honor of working with most of the aforementioned celebrities. Bialik, in an article she wrote for Grok Nation in 2019admitted that she can play it perfectly for most celebrities, but nearly broke down when the Lord of the Rings star arrived on set. It seems she was a big Sean Astin fan.