![The Big Bang Theory Season 9 Episode 4 The Big Bang Theory Season 9 Episode 4](https://image.tmdb.org/t/p/w185/eKDvR1vYLCE08K1h0KUfHNliD8T.jpg)
The Big Bang Theory Season 9 Episode 4
Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store.
Serie: The Big Bang Theory
Director: Anthony Joseph Rich, Mark Cendrowski, Nikki Lorre
Guest Star: Arshad Aslam, Craig Welzbacher, Kevin Sussman, Kurt Koehler, Laura Spencer