Incubus - Megalomaniac http://www.youtube.com/watch?v=MuZhnNR6vzc

Red Hot Chili Peppers - Otherside http://www.youtube.com/watch?v=rn_YodiJO6k

Thievery Corporation - Is It Over? http://www.youtube.com/watch?v=4WbxYzAG2I4

Tom Petty - Turn This Car Around http://www.youtube.com/watch?v=kwZ-eZuyjQE

The Beatles - Tomorrow Never Knows https://www.youtube.com/watch?v=6a3NcwfOBzQ

Massive Attack - Unfinished Sympathy http://www.youtube.com/watch?v=ZWmrfgj0MZI

A Perfect Circle - Gravity http://www.youtube.com/watch?v=qruScwv9jJQ

Steam Powered Giraffe - Brass Goggles http://www.youtube.com/watch?v=dDRHx4cPgbE
Steam Powered Giraffe - Harder, Better, Faster, Stronger (cover) http://www.youtube.com/watch?v=05-jeYSPQZ0
Steam Powered Giraffe - Automatonic Electronic Harmonics http://www.youtube.com/watch?v=gQWY-JOhF2I

The Cog is Dead - BURN IT DOWN http://www.youtube.com/watch?v=_ckCo80imFo

Voltaire - Raised by Bats http://www.youtube.com/watch?v=oXl8qJyGrZs

Power Plant - Bionic Commando Rearmed Soundtrack http://www.youtube.com/watch?v=qyFLuTZnXpI

What a weird band there Pizzas. (Steam Powered Giraffe)

I know. And I don't care, I love it!

Draug pointed me at an a capella group called Pentatonix the other day, and they're pretty damn sweet:
Pentatonix - Daft Punk https://www.youtube.com/watch?v=3MteSlpxCpo
Pentatonix - Carol of the Bells https://www.youtube.com/watch?v=WSUFzC6_fp8

Roll out the Barrels - https://www.youtube.com/watch?v=Tfs03YwLWGE

Professor Elemental - Fighting Trousers https://www.youtube.com/watch?v=0iRTB-FTMdk
Professor Elemental - I'm British https://www.youtube.com/watch?v=FkF_XpA5P48
The Axis of Awesome - Fuck Yeah, Floppy Guys! https://www.youtube.com/watch?v=IIhQCVT7Pbc

Shaka Ponk - Body Cult https://www.youtube.com/watch?v=ptDO_uuDnJg

Makes me think of the Serco. :)

Nathan Pacheco - Sonera https://www.youtube.com/watch?v=8K0FQKiVhgg

Odesza - Bloom https://www.youtube.com/watch?v=wuC1fHTnuJs

And one of my favorite PVP songs,
Eminence - Halo https://www.youtube.com/watch?v=ddr3Xam5B-U

This one makes me think of ITAN
http://www.youtube.com/watch?v=awvqIi427_A

Edelweiss - Starship Edelweiss https://www.youtube.com/watch?v=eEpcjgYHE4U

Pistols and Hearts - Captain Phoenix (Remix by the Bloody Beetroots)
https://www.youtube.com/watch?v=192ijxo74X4

I'll leave this here: http://www.vendetta-online.com/x/msgboard/15/22508#279529

Smooth downtempo electronic. Saje - Lost Tonight https://www.youtube.com/watch?v=lyBYIr-Ow5M

Dimie Cat - Glam (Electro-Swing Remix & original) https://www.youtube.com/watch?v=dFWa50ee264

New Alestorm:

Sunset on the Golden Age https://www.youtube.com/watch?v=oFpwIEfxBP4

Questing Upon the Poop Deck https://www.youtube.com/watch?v=44XceqUg3KY

Battle of Cartagena https://www.youtube.com/watch?v=-Ze1alYr6wU

DRINK! https://www.youtube.com/watch?v=f55CqLc6IR0

OMNIA - Fee Ra Huri https://www.youtube.com/watch?v=J56VVtlZCGE

Rin...you never cease to amaze me...i broke out my flute after watching this...along with my accordion