We'll be saying a big hello to all intelligent life-forms everywhere, and to everyone else out there, the secret is to bang the rocks together, guys.
8 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 2 sitcom.
You can hear this line at 00:28:06.318 in the Blu-ray version of the TV Series.
Quote context
[...]
- Here's another one of those self-satisfied doors.
- Life. Don't talk to me about life.
- No one even mentioned it to you.
- And the question everyone's asking is, has the Big Z finally flipped?
- And, recently voted the Worst-Dressed Sentient Being in the Universe, for the seventh time running.
[...]