Raj: I don't like bugs, okay. They freak me out.
Sheldon: Interesting. You're afraid of insects and women. Ladybugs must render you catatonic.
Facts via IMDB
1/20. Most of the time, Leonard has no lenses in his glasses.
2/20. Recurring guest Mayim Bialik is the only cast member to have a PhD. In 2008, she completed her neuroscience studies. She earned her Ph.D. in Neural Biology.
3/20. Jim Parsons audition for the role of Dr. Sheldon Cooper was so good that creator Chuck Lorre immediately asked Parsons to come in for a second one, because Lorre wanted to be 100% sure Parsons was as brilliant as he seemed. After the 2nd audition went perfectly, Lorre cast Parsons on the spot.
4/20. Chuck Lorre, the creator of The Big Bang Theory, is best known for writing "vanity cards" at the ends of his shows. As the credits role at the end of the show, between sponsorship ads, a piece of Lorre's writing flashes on the screen for a second, with too little time to read them. They can all be found here.
5/20. When Sheldon plays the theremin, (which is widely regarded as one of the hardest instruments to play) that is actually Jim Parsons playing the theremin.
6/20. Sheldon's soothing song, "Soft Kitty", is based on an Australian children's song from Executive Producer Bill Prady's daughter's pre school.
7/20. The two main characters (Sheldon Cooper and Leonard Hofstadter) are named after late television producer Sheldon Leonard.
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