The Big Bang Theory
The Line Substitution Solution
TV Flash files “The Line Substitution Solution” as hour 206 of 279 in the TV Flash guide — The Big Bang Theory (2007–2019) on CBS, season 9, episode 23, aired 2016-05-05, 30 min.
From the desk
How this hour is filed
This leaf is S09E23: listed hour 206 of 279 in the The Big Bang Theory guide, hour 23 of 24 in season 9. It aired 2016-05-05 (30 min). The listed hour before it is “The Fermentation Bifurcation” (S09E22). Next is “The Convergence Convergence” (S09E24).
Catalog log
Broadcast listing — not a TV Flash recap.
Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly, comes to town and Penny struggles to make a connection with her.
Viewer FAQ
Where does The Line Substitution Solution sit in the The Big Bang Theory guide?
S09E23 is listed hour 206 of 279 — hour 23 of 24 in season 9, season 9 episode 23.
When did The Big Bang Theory S09E23 air?
The Line Substitution Solution aired 2016-05-05 and is listed at 30 minutes.
Is Big Bang Theory a single-camera nerd comedy?
No. It is traditional multi-cam form — laugh track, apartment geometry — applied to comic-con brains and geek references.
In the series
Why this series still plays
Physicists, a neighbor named Penny, and geek culture going fully prime time. Chuck Lorre and Bill Prady turned nerd references into global syndication gold; Jim Parsons's Sheldon became an Emmy machine. Traditional multi-cam form applied to comic-con brains — one of the last true ratings juggernauts.
The first useful geometry is an apartment, a whiteboard, and a laugh track aimed at comic-con brains. Physicists Leonard and Sheldon navigate love, comics, and social awkwardness with neighbor Penny as the human interface. Chuck Lorre and Bill Prady's CBS series premiered September 24, 2007, and ran twelve seasons through 2019 — 279 episodes of traditional multi-cam form applied to geek references. Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar hold the apartment; Mayim Bialik's Amy later…
Filed against
- Johnny Galecki as Leonard Hofstadter
Johnny Galecki’s Leonard Hofstadter was The Big Bang Theory’s human-scale physicist — a neighbor named Penny, geek culture going fully prime time, Chuck Lorre and Bill Prady turning nerd references into global syndication gold.…
- Jim Parsons as Sheldon Cooper
Jim Parsons’s Sheldon Cooper turned nerd references into global syndication gold — physicists, a neighbor named Penny, The Big Bang Theory as traditional multi-cam applied to comic-con brains. 2000s geek culture going fully prime time, an…
- Kaley Cuoco as Penny
Kaley Cuoco’s Penny moved in across the hall and made The Big Bang Theory a neighbor problem — physicists, geek culture going fully prime time, Chuck Lorre and Bill Prady turning nerd references into global syndication gold. Traditional…
- Simon Helberg as Howard Wolowitz
Simon Helberg played Howard Wolowitz on The Big Bang Theory — engineer swagger, belt-high pants, and geek culture going fully prime time on a multi-cam that turned nerd references into global syndication gold. Comic-con brains,…
- Kunal Nayyar as Raj Koothrappali
Kunal Nayyar's Raj Koothrappali sat The Big Bang Theory's nerd-to-prime-time machine — physicists, a neighbor named Penny, Chuck Lorre and Bill Prady turning comic-con brains into global syndication gold. Traditional multi-cam, last true…
- Mayim Bialik as Amy Farrah Fowler
Mayim Bialik’s Blossom Russo made a teen girl’s POV worth a whole series — hats, fourth-wall asides, Very Special maximalism — then walked The Big Bang Theory’s nerd-reference multi-cam as if the hat kid had learned physics. Nineties…