Oh, Madame C.
The Big Bang Theory Season 7, Episode 11
...this is Madame Curie killing herself
by discovering radium.
The Big Bang Theory Season 6, Episode 4
Um, Isaac Newton, Madame Curie
and Niels Bohr.
The Big Bang Theory Season 3, Episode 7
Madame Curie should not be wearing
a digital watch.
The Big Bang Theory Season 4, Episode 2
...Madame Curie.
The Big Bang Theory Season 6, Episode 18