...REGARDING you and Leonard
crossed some sort of line.
The Big Bang Theory Season 2, Episode 9
enthusiastic participation
from me REGARDING my discovery.
The Big Bang Theory Season 7, Episode 10
...I'm relying on your expertise
REGARDING duration.
The Big Bang Theory Season 3, Episode 15
...REGARDING prolonged physical proximity
to Amy Farrah Fowler.
The Big Bang Theory Season 4, Episode 5
...REGARDING polymer degradation
phenomenon...
The Big Bang Theory Season 3, Episode 14