''If I had a Hammer''
I would just like you to know that I LOVE you for this question.
the wHOLE of the Lateralus album, Hooker With A Penis, Pushit, bloody everything. I could go on for AGES.
Lateralus or Schism.
It's interesting to me that he's your boyfriend, yet you don't listen to the music he listens to. My ex was the reason I got into Tool, because it's his favorite band and it was playing at some point here and there when I was around him.
He might like Flobots, they're the first thing I think of when I hear "Tool", but you might want to check some of their songs out first.
Ah, well, you could try listening to Handlebars by Flobots. Its just one song, and my favorite from them.
http://www.youtube.com/watch?v=HLUX0y4EptA You don't have to listen to it, but I wouldn't be sure if he'd like it so you might want to double check.
I love that song. I never really understood it until a year or two ago when I actually put the lyrics together. I wouldn't really say they're "Tool", but they're the closest I listen to that genre of music.
Yes by Tool
Sledgehammer by Peter Gabriel.
H is probably my favorite.
Every song on all of their albums. And every song on all of the A Perfect Circle albums.