Heroic: Spine of Deathwing

I just wanted to add this stratagem to a few places to make life easier for anyone who plans to do this raid solo (Specifically, the Spine of Deathwing fight). This is a paraphrase from another comment from lapdragon who got it from kulisek.

1) Kill 3 tentacles
2) camp in one of the tentacles holes (and make sure you have the tendrils buff) until you have at least 9 bloods attacking you - make sure to turn off your autoattack so you don't unnecessarily kill any of the bloods. Although, if you tend to have trouble it may be necessary to kill 1 blood to get the buff to resist fire damage.
3) Once you have 9 bloods, kill the final tentacle and start running left and right across his spine to keep resetting the Roll countdown, the bloods will follow you and the Amalgamation will eventually hone in on your position. Use an area of effect ability to kill all the bloods without killing the amalgam, and have the amalgam follow you over the fiery blood orbs until his counter says 9 next to the amalgam's target character icon. Then kill the amalg as quickly as you can making sure to run between the left and right side so the amalgam doesn't get rolled off prior to knocking the plate up.
4) Finally, kill the Tendon thing that is keeping the next spine plate on his back so the plate will fly off, and then repeat till you get the last plate and you win the fight!

This works best if you are at least lvl 100 with hopefully ilvl 720 or higher. I did this following these steps and was able to complete the Maybe He'll Get Dizzy... chieve at the same time. If you have trouble try taking out less of the tentacles at first or gear up. Supposedly, this fight gets much harder if you have more than 1 person doing it which from my experience is very true. I tried this Raid with a small group of new guildies and the person who took us knew what he was doing but it was horrible because no one else knew what to do and it is very difficult with a non-cohesive team. Probably the worst boss mechanic of the entire game.

This works as of 7.1.5 Legion

Easy version:
1) kill 3 tentacles, 3 amalgamations will spawn
2)kill 2 amal's and wait until 9 or more corrupted blood spawn
3) kill all corrupted bloods
4) pull amal through the puddles the bloods leave behind
5) at 9 stacks, kill amal next to the plate, it will explode and rip the plate off
6) rinse and repeat. always keep 1 tentacle and 1 amal up each round

good luck

As of Patch 5.04 Heroic: Spine of Deathwing is no longer a requirement for Glory of the Dragon Soul Raider.