the only particularly good band i heard come from sensei was A7x. oh, and atreyu are ok... ish...
dragonforce however are awful, theres impressive solos that work well, but come on, dragonforce play like tits for the sake of it. whoop de do you can play and sound like a malfunctioning synthesizer.
Indie is one of the few refuges of individuality left in modern culture. the music is lively, and gets you in a great mood.
R n' B I'll agree with. modern stuff is crap.
Dance is a tricky one... the name of the genre 'dance' has been soiled by a combination of things... Buses, pikeys, Sony Walkman Phones, high pitched 'singing' and a 320 bpm bassline...
however, we cant let that taint our view, dance is a very wide genre, basement jaxx, for example, are dance, and they sound nothing like you described dance as. (incidentally, jaxx are one of my favorite bands)
i do listen to quite alot of heavies, they give me a boost too, listen to a band called moonsorrow, they're ace.
i like most stuff though... anyway, i've been ranting too much...
Spiderbait - Black Betty
The Guess who - American Woman
https://www.youtube.com/watch?v=n1x6NNNfVJc