http://www.youtube.com/watch?v=SmVAWKfJ4Go

I be no ones heard this before.

http://www.youtube.com/watch?v=TAsN_tcKm7Q

Friend sent me this yesterday, thought it was pretty awesome (The Flaming Lips cover).

http://www.youtube.com/watch?v=n8G1oADtHcQ

I hope I don't have to say who did the original.

Also:
http://www.youtube.com/watch?v=bwAw9ThDQmk

Great song.

http://www.youtube.com/watch?v=Sj-C6JOVoDs

http://www.youtube.com/watch?v=ydPNDv46ehA

http://www.youtube.com/watch?v=jVVmsxR67ZE

http://www.youtube.com/watch?v=rESItSV0tNs

thank you minnows

http://www.youtube.com/watch?v=W60o0tk78xs

http://www.youtube.com/watch?v=733O0xJDx8o

http://www.youtube.com/watch?v=HW_9SGrc4Oo

http://www.youtube.com/watch?v=F0odBpvBAYM

For the record, this page took 20 seconds to load.

http://www.youtube.com/watch?v=cdkBs0VCSX0

when will people learn techno is trash

http://www.youtube.com/watch?v=1c4FTtQ8l3Y

http://www.youtube.com/watch?v=fregObNcHC8

Oh yeah, obligatory:

http://www.youtube.com/watch?v=ZZ5LpwO-An4

http://www.youtube.com/watch?v=xhGnuHuD5Fc

johnny cash - hurt
streetlight manifesto - such great heights
the ataris - boys of summer (shut up ok)
opeth - soldier of fortune
reel big fish - take on me

Earth - Peace In Mississippi (Hendrix Cover)

http://www.youtube.com/watch?v=nbppuFbaQi8

Also come to mind :
Low Places - Deathcrush (Mayhem cover)
Cursed - Hawaii (Kittens cover)
Earthless - Cherry Red (Groundhogs cover)
Dead In The Dirt - Skin Graft (Left For Dead cover)
Converge - Wolverine Blues (Entombed cover)
Dopethrone - Ain't No Sunshine (Bill Withers cover)
Sunn O))) - F.W.T.B.T. (Metallica cover)
Full of Hell - Atmosphere (Joy Division cover)
Young and in the Way - Sober (Tool cover)
Volnut - Bloody Fucking Necro Hell (Carpathian Forest cover)

http://www.youtube.com/watch?v=XCGQiGEYl4Y

60s and early 70s soul/R&B probably accounts for 75% of the greatest covers, because so many awesome artists were recording them all the time.

http://www.youtube.com/watch?v=zB24z00ajU4

Otis Redding - A Change is Gonna Come
Aretha Franklin - Respect

http://www.youtube.com/watch?v=IieOEvzMjng

http://www.youtube.com/watch?v=SZY83voCJZE

The whole ABR christmas album is fucking awesome

http://www.youtube.com/watch?v=MCWaN_Tc5wo

http://youtu.be/c745E7T_Wvg

gives the song so much more feeling.

.

there are too many good covers of this song, but these three are my favorites :3

http://www.youtube.com/watch?v=vVFa2iuKmFw

http://www.youtube.com/watch?v=qtFBRJFN3p8

http://www.youtube.com/watch?v=xbwsyInfDMk

edit: i guess you can't have different embedded youtube videos in one post lol

http://www.youtube.com/watch?v=KYuQWO3NsFI