Ladytron

If you're into electronica/indie, then Ladytron's the band for you. Not exactly unknown but not very mainstream either. Anyway, they come from Liverpool, England and are pretty good.

Witching Hour

Get past Ladytron's aloof exterior on this album and you'll discover bristling guitars that anchor the most pneumatic of beats--and supremely catchy songs that pulse with life.
Mediafire

Velocifero
This album embodies the highlights of the band's past work, and is imbued with the progressiveness that has made each successive Ladytron release a step above its predecessor. Loadsa catchy tunes on this one. I've even included a Toxic Avengers remix of "Ghost", just as an extra goodie. ;)
Mediafire