
And on a different
but not unrelated TOPIC...
The Big Bang Theory Season 3, Episode 1

- New TOPIC.
- Mm.
The Big Bang Theory Season 2, Episode 9

...to introduce
an alternate TOPIC of conversation.
The Big Bang Theory Season 4, Episode 7

Please. Every time the TOPIC of change comes
up you throw Zachary Quinto in my face.
The Big Bang Theory Season 6, Episode 23

I would like to propose a salon TOPIC.
The Big Bang Theory Season 8, Episode 18