Due to technical problems, user registration via email is temporarily unavailable. Please use a social network account for signing up.
![Pilot episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/0b3028e78e88e788b7ab3896c107bc82758a46cb.png "Watch "Pilot" episode online")
Pilot
1
9580
![The Big Bran Hypothesis episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/3a31f42297e6d8e1a8cf6fc68a2e5d22b2f729c4.png "Watch "The Big Bran Hypothesis" episode online")
The Big Bran Hypothesis
2
4993
![The Fuzzy Boots Corollary episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/209f2d3250536a0270b9da532572591abc84001e.png "Watch "The Fuzzy Boots Corollary" episode online")
The Fuzzy Boots Corollary
3
3649
![The Luminous Fish Effect episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/a324fce8db8279282463fa852159cf8f5e416f3a.png "Watch "The Luminous Fish Effect" episode online")
The Luminous Fish Effect
4
2149
![The Hamburger Postulate episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/a183da40559847c38f7b036d9e54fbdfcad198fd.png "Watch "The Hamburger Postulate" episode online")
The Hamburger Postulate
5
1732
![The Middle-earth Paradigm episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/f3657b148ad9ee501db0033863c4b5ddd40501ce.png "Watch "The Middle-earth Paradigm" episode online")
The Middle-earth Paradigm
6
1303
![The Dumpling Paradox episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/fe03c14a84e2e5d1a08fa08d379b41c5d970547f.png "Watch "The Dumpling Paradox" episode online")
The Dumpling Paradox
7
1194
![The Grasshopper Experiment episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/64993a980e9c17ce09be61a29b9bfd1013ca4870.png "Watch "The Grasshopper Experiment" episode online")
The Grasshopper Experiment
8
1036
![The Cooper-Hofstadter Polarization episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/29f2fb7c4671438baf15a1d97ad7c25e3a756e8d.png "Watch "The Cooper-Hofstadter Polarization" episode online")
![The Loobenfeld Decay episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/2e7f78bb0fabd57d352faf4594ec7b6af2501435.png "Watch "The Loobenfeld Decay" episode online")
The Loobenfeld Decay
10
904
![The Pancake Batter Anomaly episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/1fa46687e7cda52964cdd61441d308f4fb05f866.png "Watch "The Pancake Batter Anomaly" episode online")
The Pancake Batter Anomaly
11
861
![The Jerusalem Duality episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/5e8f8f1b84f93df5a0e7647511217c6973d29829.png "Watch "The Jerusalem Duality" episode online")
The Jerusalem Duality
12
766
![The Bat Jar Conjecture episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/4e4ef5b51ee1fde8e3779e5d238955653a3bb25f.png "Watch "The Bat Jar Conjecture" episode online")
The Bat Jar Conjecture
13
722
![The Nerdvana Annihilation episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/361501c285e6de164e97ac67d5a350f1ae6f31b5.png "Watch "The Nerdvana Annihilation" episode online")
The Nerdvana Annihilation
14
664
![The Shiksa Indeterminacy episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/96beea8d1befe537c385b98de78a131dee9d69b2.png "Watch "The Shiksa Indeterminacy" episode online")
The Shiksa Indeterminacy
15
616
![The Peanut Reaction episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/8614515a98d36747ce226227230ca51cfd940a82.png "Watch "The Peanut Reaction" episode online")
The Peanut Reaction
16
581
![The Tangerine Factor episode thumbnail](https://english-fun.org/images/thumbs/tvseries/other/the_big_bang_theory/357e6ba40044909d3d197a50e589964d67148dd7.png "Watch "The Tangerine Factor" episode online")
The Tangerine Factor
17
648
