Kitty was complaining I was showing her too many dubsteps, so I decided to wrap this one in a healthy layer of music I also like because I was kinda meaning to show you some of that sometime too.  So without further ado...

Imogen Heap is one of my favorite artists of all time.  She does electronic music that goes from peaceful to mournful to a bit boppy.  She has strange lyrics that sometimes I like and sometimes I don't and uses a lot of vocal sounds in her backgrounds.
I want to link to all her songs here, honest.  But I'll choose my absolute favorites.
Earth - [link] - This song is all vocals- no computer sounds.  It has a fun premise.  Some lyrics of hers I find weird, but these sound like poetry.  
Swoon - [link] - One of her boppier offerings, though this has a darker sound to it too.  Listen to it and you'll know what I mean.  _{(tavriiiiiiiis)}
2-1 - [link] - This has some interesting lyrics.  I've been meaning to listen to it more closely.
Just For Now - [link] - And look what she did live!  This is both beautiful and really impressive!

Steve Hudson Chamber Ensemble do funky jazz things.  They have the most expressive violinist in the world and a drummer who plays stool solos.  I know about them because my brother takes piano lessons from their pianist~  Music can be found at their webpage here ([link] favorites are Keep it Simple, Song for John Lennon, and Wanderin'.  Sibling likes Funky Hobbit.

Crosby, Stills and Nash have been a favorite for a looooooooooooong time.  They have intense vocal harmonies with a few acoustic instruments thrown in there.  
See the Changes - [link] - Very peaceful, very nice.
In My Dreams - [link] - The best song, it is this.  

Jonathan Coulton is known for his nerdily comedic music, including "Still Alive" and "Want you Gone".  Don't know too many of his songs, but I like some I do know  Especially the quiet acousticy ones.
Now I Am An Arsonist - [link] - Fascinating lyrics.  The slighly computer-sounding sound on a song otherwise calm and acoustic is artistically appropriate.
You Oughta Know - [link] - This is a cover of an Alanis Morisette song (or however you spell her name) made all quiet and acoustic and mournful.  
I Crush Everything - [link] - Giant squid in love.  What more needs to be said really.
Re: Your Brains - [link] - Oh wait he does lighthearted stuff too.  This is his general sound in a lot of it.

Random
Internet friends - [link] - Finally here is the dubstep song.  It's quite well done, in my opinion.  The lyrics could work equally well for Vriska Serket or a GLaDOS who has access to Facebook.
Target Lost - [link] - A Portal turret remix with a surprise inside.
Modulation - [link] - A remix of a Cave Story song that does the best possible thing with it.  It ends way too soon.

Also, in my last journal I ranted a lot about Homestuck but failed to promote the best AU the fandom contains.  This shall now be remedied.  It is called Brainbent and it is about the Homestuck characters dealing with their various mental problems in a theraputic setting.  It's really well done, and fans have confirmed that the various disorders the characters have are represented well (except for Vriska's, but the in-universe psychiatrists were kinda guessing on that one anyway).  You don't have to read Homestuck to get it, although there are a bunch of mythology gags and the typing quirks will look really weird if you haven't read it.  It can be found here, on Tumblr: [link]

Edit RE: the homestuck update.
how do you even prototype
THE ENTIRE PLANET.
that just
ISN'T
DONE.
also how can caliborn manage to
BITE HIS OWN LEG OFF
and still be adorable.
uu: I THINK I'M GOING AS DADDY NEXT HALLOWEEN.
UU: nooooooooooooooooooooooo!
ALSO
did LE just
LIKE
make a crack in paradox space
OR WHAT?

consider my mind
OFFICIALLY FUCKED.