My personal favorite is Viznut's classic signature:<p><pre><code> #include <math.h> /* outputs 8 kHz 8-bit unsigned pcm to stdout */
main(v,i,z,n,u,t){for(v=-1;;)for(n=pow(/* gcc -lm sig.c;./a.out>/dev/dsp */
1.06,"`cW`g[`cgcg[eYcb^bV^eW^be^bVecb^"[++v&31]+(v&64)/21),i=999;i;putchar(
128+((8191&u)>i?0:i/8)-((8191&(z+=n))*i-->>16)))u+=v&1?t/2: (t=v&6?t:n/4);}
</code></pre>
edit: fixed copy/paste error