'The Big Bang Theory': Sheldon Cooper's Nerdiest Quotes

Jessica Napoli

The Big Bang Theory is coming to an end, which means we'll be saying goodbye to some of the most beloved sitcom characters on TV.

The hardest one to say farewell to will be Sheldon Cooper (Jim Parsons) and his geeky yet equally funny one-liners. The theoretical physicist might be just as annoying and as he is earnest, but at least he's always entertaining.

Where Does 'The Big Bang Theory' Rank Among the Longest-Running TV Sitcoms?

Where Does 'The Big Bang Theory' Rank Among the Longest-Running TV Sitcoms?

Breaking down American sitcoms with the highest episode counts, including 'Married… With Children,' 'Cheers,' and more.

We've collected his nerdiest quotes over the past 12 seasons. Click through the gallery for a laugh!

The Big Bang Theory, Season 12 Premiere, September 24, 8/7c, CBS