Let's crack on. In no especial order.
Liberty 37 - 'Oh River' - from "The Greatest Gift" - 1999
Straight-up rock with grunge elements and a soaring vocal delivery, Liberty 37 were one of the seemingly hundreds of bands swarming the UK live rock scene in the late 1990s. I suspect they would probably still be going if they had been American.
Cyclefly - 'Supergod' - from "Generation Sap" - 1999
Irish/European sparkling glam punk-ish rock. Mix Placebo with vinyl catsuits and a heightened sense of violent aggression, season to taste. I can guarantee that this will be the only band I ever list on the site who collaborated with Linkin Park's Chester Bennington, unless the new Godflesh album has some REAL surprises on it.
Onedice - 'Know Your Role' - from "Life" - 2001
Thrash-tinged metal assault, with both ferocity and precision in the delivery. My overriding memory of these guys is slamdancing in a large tent at a small Exeter festival while a French man punched me repeatedly in the kidneys. My girlfriend at the time told me not to say anything or he'd beat me up. Those were supportive times.
The God Machine - 'Painless' - from "One Last Laugh In A Place Of Dying" - 1994
Like Swans colliding with Alice In Chains in a darkened underpass, The God Machine's two albums may be the most profoundly depressing and oddly uplifting music I have ever heard. Oh yeah, descriptive contradictions baby. That's how you know I am an amazing music hack.
Engerica - 'Roadkill' - from "There Are No Happy Endings" - 2006
Demented threepiece punk rock with the melodic nous of Therapy? and the acid-etched lyrical bite of Steve Albini. This tune is even straightforward enough on the surface that it could appeal to the teenage emo crowd. And chart. As long as they didn't pay too much attention.
Will Haven - 'I've Seen My Fate' - from "El Diablo" - 1997
Reverse metal riffs chugging at you from the ultradense heart of a neutron star, while the vocals howl in your forebrain. Part of the Sacramento scene that also birthed Far and Deftones, and it shows. Will Haven are undoubtedly both the heaviest and least immediately successful of the three, though they have proven to be highly influential - which is the same thing, only without any money or groupies.
Aereogramme - 'Indiscretion #243' - from "Sleep And Release" - 2003
Genre-wise Aereogramme laughed and spat in your face playfully, with elements of post-rock, indie, folk and metal jostling around for attention. No song was the same as another, nor one album akin to its predecessor. Follow-on acts include similarly excellent The Unwinding Hours and indie/electro sweethearts du jour CHVRCHES.
I Love You But I've Chosen Darkness - 'According To Plan' - from "Fear Is On Our Side" - 2006
A lot of bands swarmed around the feet of the pseudo-post-punk renaissance in the middle of the last decade, but these guys did it bloody well. If you absolutely need a comparison, think Interpol but swathed under layers of atmosphere and therefore better.
Psycore - 'Medication' - from "Your Problem" - 1998
The more cerebrally satisfying of metal acts have traditionally not been the best-selling, Tool aside. Here's just one example from Swedish mentalists Psycore, who were like Helmet playing a jazz club where everyone just fucks and eats each other instead of applauding.
earthtone9 - 'Tat Twam Asi' - from "Arc'Tan'Gent" - 2000
Hey, speaking of cerebrally satisfying metal. These guys are back in action these days and are still a formidable live prospect. Back in the day their tribal intellectual roar was without peer, and they have produced some of the finest metal albums ever made.
This will undoubtedly become an ongoing series, by which I mean I'll knock out another one then get bored with the concept of exhaust my stock of bands. JOIN ME FOR THAT GLORIOUS MOMENT.