Here is an interesting spec that some might not be familiar with. Explanation to follow.
Blood (51 points)
5/5 Bladed Armor
2/2 Two-Handed Weapon Specialization
5/5 Dark Conviction
3/3 Death Rune Mastery
3/3 Bloody Strikes
3/3 Veteran of the Third War
3/3 Bloody Vengeance
2/2 Abomination's Might
5/5 Sudden Doom
1/1 Vampiric Blood
1/1 Heart Strike
3/3 Might of Mograine
5/5 Blood Gorged
1/1 Dancing Rune Weapon
Frost (0 points)
Unholy (20 points)
2/2 Vicious Strikes
3/3 Ravenous Dead
3/3 Blood-Caked Blade
1/1 Shadow of Death
(I am not yet able to post links, sorry for the inconveience)
Glyphs: Blood Strike, Obliterate, Raise Dead
So, in this spec, you basically do not spend your rune cooldowns on planting diseases, you just obliterate, enabling death runes. You need Glyph of obliterate to make this work. The rotation basically goes like:
Heart Strike x2
Obliterate x2 (Turns your frost and unholy runes into death runes)
At this point, you should have enough runic power to use a dancing rune weapon.
Heart Strike x6 ( Utilizing death runes )
At any point during this sequence, if the free Death Coil procs, it should be used.
Hysteria, Raise Dead, and other abilities should be used when deemed necessary )try to use Hysteria together with DRW).
At first this seems ridiculous, but calculations show that this spec can do just as much, if not more, damage as normal DK specs.
However, this spec is the most gear dependant spec of them all, so you need a solid weapon, and the Sigil which enhances Blood and Heart Strike.
As far as I know, this isn't a repost. If it is, I apologize. Also, similar information may be found on other sites, but I never found such an extensive guide on the subject, so I wrote one.
I would love to answer any further questions.
Thanks for reading.