The Big Bang Theory
The Wiggly Finger Catalyst
TV Flash files “The Wiggly Finger Catalyst” as hour 91 of 279 in the TV Flash guide — The Big Bang Theory (2007–2019) on CBS, season 5, episode 4, aired 2011-10-06, 30 min.
From the desk
How this hour is filed
This leaf is S05E04: listed hour 91 of 279 in the The Big Bang Theory guide, hour 4 of 24 in season 5. It aired 2011-10-06 (30 min). The listed hour before it is “The Pulled Groin Extrapolation” (S05E03). Next is “The Russian Rocket Reaction” (S05E05).

Catalog log
Broadcast listing — not a TV Flash recap.
Raj finally meets a girl he can communicate with.
Viewer FAQ
Where does The Wiggly Finger Catalyst sit in the The Big Bang Theory guide?
S05E04 is listed hour 91 of 279 — hour 4 of 24 in season 5, season 5 episode 4.
When did The Big Bang Theory S05E04 air?
The Wiggly Finger Catalyst aired 2011-10-06 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
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- Simon Helberg as Howard Wolowitz
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- 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…