Archive · 9 Nov 2025
The Big Bang Theory's Original Title Was Almost 'Lenny, Penny, and Kenny'
Imagine a super popular TV show about funny scientists called 'The Big Bang Theory'.
Well, guess what?
It almost had a completely different name!
A new book tells us that the very first name they thought of was 'Lenny, Penny, and Kenny'.
In this first idea, the character Sheldon was going to be named Kenny, Leonard was Lenny, and Penny kept her name.
This name only lasted for a little while.
The people who made the show decided to change the characters' jobs from computer experts to scientists.
Because of this big change, they started thinking about names related to science.
They found the name 'The Big Bang Theory' and thought it was a much better fit for their show about science mysteries.
Even the catchy song at the beginning of the show mentions the big bang!
The original working title for the Emmy-winning sitcom 'The Big Bang Theory' was 'Lenny, Penny, and Kenny'.
In the initial concept, the character Sheldon Cooper was to be named Kenny, and Leonard Hofstadter was to be named Lenny.
The title 'Lenny, Penny, and Kenny' was quickly replaced, according to co-creator Bill Prady.
The change in title occurred when the characters' professions shifted from computer programmers to scientists.
The show's title was eventually settled upon as 'The Big Bang Theory' after exploring scientific terms, and its theme song incorporates lyrics about the big bang.
- Who
- The Big Bang Theory's co-creators Bill Prady and Chuck Lorre, and author Jessica Radloff
- What
- Revealed the original working title of the popular sitcom 'The Big Bang Theory' was 'Lenny, Penny, and Kenny'.
- When
- During the development of the show.
- Where
- In the United States.
- Why
- The title changed from 'Lenny, Penny, and Kenny' to 'The Big Bang Theory' after the characters' careers were changed from computer programmers to scientists, prompting a search for a more fitting title related to scientific terms.
- Original Title
- Lenny, Penny, and Kenny
- Main Characters (Original Names)
- Lenny (Leonard), Penny (Penny), Kenny (Sheldon)
- Show's Genre
- American Sitcom
- Number of Seasons
- 12
- Book Revealing Title
- The Big Bang Theory: The Definitive, Inside Story of the Epic Hit Series
- Book Author
- Jessica Radloff