Sorry the video links aren't that great (most videos posted on YouTube are live versions), but I think studio versions are more representative of cover intent, so I've opted for them. Close your eyes and soak in the audio goodness :o)
Cinnamon Girl
https://www.youtube.com/watch?v=ehi7une6O4g
https://en.wikipedia.org/wiki/Type_O_Negative
Original - Neil Young & Crazy Horse (Album: Everybody Knows This is Nowhere, 1969)
https://www.youtube.com/watch?v=aAdtUDaBfRA
https://en.wikipedia.org/wiki/Neil_Young
https://en.wikipedia.org/wiki/Cinnamon_Girl
Smooth Criminal
https://www.youtube.com/watch?v=CDl9ZMfj6aE
https://en.wikipedia.org/wiki/Alien_Ant_Farm
Original - Michael Jackson (Album: Bad, 1987)
https://www.youtube.com/watch?v=h_D3VFfhvs4
https://en.wikipedia.org/wiki/Michael_Jackson
https://en.wikipedia.org/wiki/Smooth_Criminal
The Sound of Silence
https://www.youtube.com/watch?v=u9Dg-g7t2l4
https://en.wikipedia.org/wiki/Disturbed_(band)
Original - Simon & Garfunkel (Album: Wednesday Morning, 3 A.M., 1964)
https://www.youtube.com/watch?v=4zLfCnGVeL4
https://en.wikipedia.org/wiki/Simon_%26_Garfunkel
https://en.wikipedia.org/wiki/The_Sound_of_Silence
Breadfan
https://www.youtube.com/watch?v=ibwDs78ttdQ
https://en.wikipedia.org/wiki/Metallica
Original - Budgie (Album: Never Turn Your Back on a Friend, 1973)
https://www.youtube.com/watch?v=orYr_dVnb48
https://en.wikipedia.org/wiki/Budgie_(band)
https://en.wikipedia.org/wiki/Breadfan
The House of the Rising Sun
https://www.youtube.com/watch?v=scTqpfL9WMA
https://en.wikipedia.org/wiki/The_White_Buffalo_(band)
(Best recognised) Original - Animals (Album: The House of the Rising Sun [Single], 1964)
* The oldest known recording of this song is by artists Clarence Ashley and Gwen Foster, 1933.
It has been extensively covered; The Platters, The Doors, The Beatles, Pink Floyd, The Eagles, Sinead O'Connor, The White Stripes, Courtney Love, and many more artists...
https://www.youtube.com/watch?v=5A-4VGfx5lU
https://en.wikipedia.org/wiki/The_Animals
https://en.wikipedia.org/wiki/The_House_of_the_Rising_Sun
Hurt
Johnny Cash - Hurt (Album: American IV: The Man Comes Around, 2002)
https://www.youtube.com/watch?v=vt1Pwfnh5pc
https://en.wikipedia.org/wiki/Johnny_Cash
Original - Nine Inch Nails (Album: The Downward Spiral, 1994)
https://www.youtube.com/watch?v=kPz21cDK7dg
https://en.wikipedia.org/wiki/Nine_Inch_Nails
https://en.wikipedia.org/wiki/Hurt_(Nine_Inch_Nails_song)
