
That is kind of INTERESTING.
The Big Bang Theory Season 12, Episode 17

Interesting.
The Big Bang Theory Season 10, Episode 15

Okay, now it's INTERESTING.
The Big Bang Theory Season 12, Episode 6

Interesting, and when
would you use the singular?
The Big Bang Theory Season 9, Episode 15

- Well, here's an INTERESTING turn of events.
- What?
The Big Bang Theory Season 1, Episode 4