if your going for the more electronic radiohead, id suggest songs like Idioteque, everything in its right place and maybe 15 step.The last as a way to bridge the gap between they're electronic and rock-based stuff
It wouldn't matter since I listen to almost just about every genre of music (There are some genres I haven't checked out or checked thoroughly enough though.) But something tells me I should start from the very beginning.
I'm not massively into it, but I can point you to a few artists.
Eskmo (early stuff, he's a dubstep producer now and one of the best imo)
Drumattic Twins
Splitloop
Equalizers
Far Too Loud
Koma & Bones
Napt
Shiloh
Breakfastaz
Dom Almond
Ctrl-Z
Dilemn
EDIT:
I just realised you said No one recommend me some breakbeat, I'm leaving the list so just assume it's not directed at you.
I would easily kill innocent people to be able to see them perform "Computerliebe" live.
I love electronic music. Going to techno/house/electro clubs and just dancing like an idiot and waving my arms around is every bit as exhilarating as seeing live metal. It's why Berlin is my favorite city.