Home Search Anime Asian dramas TV Shows Movies Shorts Watchlist Instant pick Feedback

Loading content

Loading content

Loading content

Redflix

Stream without the hassle

HD streaming, quick discovery, and a cleaner watch experience.

Explore

Home Watchlist Instant pick Movies TV Shows Asian dramas Anime Browse Shorts

Trust & legal

About Contact Privacy Terms DMCA Legal AI Policy

Community

Join Discord (opens in new tab)

Share Redflix

Copyright holders: DMCA Request

HD streaming•No sign-up to start•Private by design

©2026 Redflix. All rights reserved.

Watch The Big Brain Theory (2013) Free Online HD | Redflix

Poster for The Big Brain Theory

The Big Brain Theory(2013)

Reality

8.5(2)1 season8 episodes2013-05-01

Where to watch The Big Brain Theory. Stream The Big Brain Theory free in HD on Redflix—no sign-up required.

More TV shows·Reality series free·Popular TV shows

Cast

Photo of Kal Penn

Kal Penn

Self - Host

Related movies & shows

George Clarke's Beautiful Builds
Shark Tank
Løvens hule
Visionaries
Critter Fixers: Country Vets
Mark Rober's Revengineers
Hack My Home
The Universe
The Future Of
The Mars
Thunderbirds
What's Next? The Future with Bill Gates
Invader ZIM
Secrets of the Brain