
...so that he could write an entry about Earth
for The Hitchhiker's Guide to the Galaxy.
The Big Bang Theory Season 8, Episode 8

- Yours are the stars that GUIDE us.
- Tell him!
Game of Thrones Season 4, Episode 2

...luminous paint
will GUIDE you to the nearest exit.
The Big Bang Theory Season 4, Episode 24

in Hitchhiker's Guide
to the Galaxy,
The Big Bang Theory Season 7, Episode 16

Kleingast's Field Guide
to North American Insects.
The Big Bang Theory Season 3, Episode 2