
We missed our LECTURE...
The Big Bang Theory Season 8, Episode 19

If you enjoyed
this LECTURE,
The Big Bang Theory Season 12, Episode 5

The LECTURE was
on cosmic gas clouds.
The Big Bang Theory Season 7, Episode 17

Yeah, yeah. My mom gave me the
same LECTURE about my virginity.
The Big Bang Theory Season 5, Episode 20

It's a Stephen Hawking LECTURE from MIT
in 1974.
The Big Bang Theory Season 1, Episode 1