TV series example of the word

The Big Bang Theory Season 3, Episode 6
Going out to discover electricity?

The Big Bang Theory Season 1, Episode 5
I'm not sure, but I think I'm about to discover how the banana felt.

The Big Bang Theory Season 3, Episode 15
...discover our weaknesses, and report back to your alien overlords.

The Big Bang Theory Season 2, Episode 4
But you didn't discover him. You merely noticed he was here...

Vikings Season 1, Episode 3
I find him very useful, as you will discover.