- My name? My name is Slartibartfast.
- I beg your pardon?
- Slartibartfast!
- Slartibartfast?

14 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 3 sitcom.

You can hear this line at 00:26:01.085 in the Blu-ray version of the TV Series.

Quote context

[...]

- It's a sort of threat, you see. I've never been terribly good at them myself, but I'm told they can be terribly effective.

- What an extraordinary person.

- I beg your pardon?

- Nothing.

- Where are we going?

- We are going deep into the bowels of the planet, where even now, our race is being revived from its five-million-year-old slumber.

- Magrathea awakes.

- Excuse me, what is your name, by the way?

- My name? My name is Slartibartfast.

- I beg your pardon?

- Slartibartfast!

- Slartibartfast?

- I said it wasn't important.

- It is an important and popular fact that things are not always what they seem.

- For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much: The wheel, New York, wars and on. Whilst all the dolphins had ever done was muck about in the water having a good time.

- But, conversely, the dolphins believed that they were more intelligent than man, for precisely the same reasons.

[...]