Prodigy is a pretty popular choice for 'rock-electornica' bands I'd guess.
If you want something harder that sorta mixes those 2 things then you might like Lords of Acid...especially their Voodoo-U cd.
Also, kinda on a side note, I've found that quite a few metal-head friends of mine enjoyed dark drum and bass like Dieselboy, when I hooked em up.
So maybe check out his 'Dungeon Master's Guide' cd if you have the time and like metal too.