I may be the last one to know this trick, but if you turn on your computer speakers and type the following code in Matlab, it plays a gong sound:

load gong.mat;
sound(y)

Silly, but fun.  Type "doc sound" to learn about the sound command.

try 

load handel

sound(y)

then try my little demo

fred

handel_demo

-- Neil

A-bit-o-fun!  Thanks for sharing.

Thanks, neirober.  I tried also handel.mat, hoping it would play a bit of Water Music. Not.  It's a bit of Hallelujah Chorus. It's fun.