The sounds a Mac makes are iconic and easily identified. For example, when I saw Pixar's "Wall-E [1]" on opening night, I knew immediately what percentage of the audience used Macs from the giggles I heard after the titular robot finishes recharging, which ends with the Mac's startup chime. You may also know the story of Sosumi [2] (a made-up word that, when said aloud, is "so sue me").
What happens when you put the Mac's sounds together? Hear it yourself: Designer and musician Mike Soloman created a catchy tune [3] made up entirely of Mac sounds in GarageBand. I especially like that he included a screencast of GarageBand playing the song (and that he threw in the Wilhelm scream [4] at the end). Soloman has made his GarageBand file available for download, as well as an audio file of the song.
[1]: http://www.imdb.com/title/tt0910970/
[2]: http://www.boingboing.net/2005/03/24/early-apple-sound-de.html
[3]: http://www.thecleverest.com/videos/343
[4]: http://en.wikipedia.org/wiki/Wilhelm_scream