[mrspeaker]

If you have ANY interest in space, and don't know about KSP - do yourself a favor and check it out! It even has a very xkcd seal of approval: https://xkcd.com/1356/

[Diederich]

Elon Musk gave KSP some love too: https://www.reddit.com/r/IAmA/comments/2rgsan/i_am_elon_musk...

[gizmo686]

The banner on the old KSP website said "Kerbal is awesome -Elon Musk"

EDIT: According to the changelog, "Elon Kerman" has been added to the name pool.

[swampthinker]

http://web.archive.org/web/20150202020035/https://www.kerbal...

[toomuchtodo]

+1 for an Archive.org link.

[numpad]

There are even more:

https://xkcd.com/1244/

http://xkcd.com/1106/ (have a look at the alt-text)