
♪ That all started
with a big BANG ♪
The Big Bang Theory Season 12, Episode 8

# Bang! #
The Big Bang Theory Season 11, Episode 14

♪ That all started
with a big BANG ♪
The Big Bang Theory Season 7, Episode 7

♪ That all started
with a big BANG ♪
The Big Bang Theory Season 7, Episode 15