Tool - Aenima
Somewhere between hearing third eye for the first time on acid, taking english and chemistry with adam jone's niece, and rolling my first time at a tool concert, they've become the most significant band in my life.

Linkin Park - Hybrid Theory
I don't like their other albums, but Hybrid Theory really got me into the rock/alternative scene.

Pink Floyd - Wish You Were Here
Not as good as a whole album, but wish you were here was the first song i heard tripping.

Infected Mushroom - Vicious Delicious
Got me into...psytrance? I'm not sure exactly what to call the genre. Very energetic and diverse.