I saw this in some guy's sig, but when I asked him to explain he had to admit it wasn't his work and he didn't understand it either...

perl -le '$_="6110>374086;2064208213:90<307;55";tr[0->][ LEOR!AUBGNSTY];print'

It prints out "ALL YOUR BASE ARE BELONG TO US!" for anyone who can't be bother to run it.