
...Superman cleans his uniform
by flying into Earth's yellow sun...
The Big Bang Theory Season 2, Episode 11

...and Superman catches her.
The Big Bang Theory Season 1, Episode 2

Unless Superman
matches her speed and decelerates.
The Big Bang Theory Season 1, Episode 2

Plus Superman and Godzilla.
The Big Bang Theory Season 1, Episode 5

(HUMMING "SUPERMAN" THEME SONG)
The Big Bang Theory Season 2, Episode 21