if you ever get a chance to see them in concert, i highly recommend it. i went to their concert in hawaii last november, and it was a night to remember! if you've never heard of tool before, check out the sample songs below. or check these sites...

~websites~

tool's official website
toolshed

~some cool tool songs~
stinkfist
pushit
lateralus
parabol
parabola
schism
Ænima
disgustipated
hush
fortysix and 2
the grudge