
♪ The Earth began to cool
The Big Bang Theory Season 5, Episode 16

Why on EARTH would I want
to do something nice for you?
The Big Bang Theory Season 5, Episode 21

he's a hero
to all the nations of the Earth?
The Big Bang Theory Season 9, Episode 23

All right, this is
a Google Earth view
The Big Bang Theory Season 5, Episode 1

♪ The Earth began to cool ♪
The Big Bang Theory Season 5, Episode 1