Tool - Stinkfist
I highly recommend the Salival DVD/CD box set. Its a little more expensive and hard to find than the VHS/CD version now and even a few months after its release. There are some good live and unreleased stuff on the CD. Also, there are single video DVD releases of Parabol/Parabola, Schism and Vicarious. Worth getting for the music videos and awesome commentaries alone with people like David Cross, Jello Biafra, etc... Was disappointed the single video releases lacked surround but still sounds nice with 48khz DVD stereo at higher bit-rate than the albums.
BTW, this has always been my favorite band. Seeing them live does them way more justice, especially from 97-2003 tours. I know lots of people that didn't care or even disliked Tool, and then I took them to a live show. Completely changed their minds. It's the closest thing to something like Pink Floyd your going to see live. The instrumental genius sound with this band still blows my mind. Read up on the song Lateralus with how it is mathematically music wise like a spiral, lol... crazy awesome stuff. My top 5 favorite songs are The Grudge, Stinkfist, Push It, Disposition/Reflection and Vicarious.