♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 5, Episode 1
# Math, Science, History,
unraveling the MYSTERY #
The Big Bang Theory Season 11, Episode 9
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 5, Episode 23
...my Journey Into Mystery 83,
first appearance of Thor...
The Big Bang Theory Season 3, Episode 16
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 20