[Macros] Useful Death Knight Macros
With the new expansion coming up (Wrath of The Lich King), there will be a new class introduced, the Death Knight.
Of course, with a new class, new abilities and spells will be introduced.
Some people already have tested the Death Knight in WoTLK beta.
And of course, with new abilities and spells, new macros will become available.
This guide will be about Death Knight Macros.
Ejection
/startattack
#showtooltip Chains of Ice
/cast Chains of Ice
/cast Death Grip
Try to press it twice in a row really quickly. It will make the target fly up into the air at a very slow rate (depending on movement speed of the mob), and eventually fall down at a very slow rate. The target can be attacked while in the air, and it serves as a great crowd control, and it only uses one Frost rune. It is more effective the further away you are from your target. Can be used constantly (or near constant) with the Unholy Command talent. Can be used on most mobs.
Runner Stopper
/startattack
#showtooltip Death Grip
/cast Death Grip
/cast Chains of Ice
Casts Death Grip. If Death Grip is on cooldown, Chains of Ice is casted instead. This allows for you to either pull, or stop an enemy from running away with the use of one button.
Ghoul Death Coil on Alt
#showtooltip Death Coil
/cast [nomodifier] Death Coil; [modifier:alt,target=pet] Death Coil
Casts a standard Death Coil with no modifier pressed down. With the ''Alt'' key held down, uses Death Coil on your pet rather than your target for healing instead of damage.
Rune Strike Macros
/startattack
#showtooltip Blood Strike
/cast Rune Strike
/cast Blood Strike
/startattack
#showtooltip Heart Strike
/cast Rune Strike
/cast Heart Strike
/startattack
#showtooltip Scourge Strike
/cast Rune Strike
/cast Scourge Strike
/startattack
#showtooltip Icy Touch
/cast Rune Strike
/cast Icy Touch
/startattack
#showtooltip Plague Strike
/cast Rune Strike
/cast Plague Strike
/startattack
#showtooltip Death Strike
/cast Rune Strike
/cast Death Strike
/startattack
#showtooltip "Rune Ability"
/script UIErrorsFrame:UnregisterEvent("UI_ERROR_MESSAGE")
/cast "Rune Ability"
''Rune Ability'' can be replaced by any ability you would like to use.
With this, you won't get the error message when you spam the macro.
I will add more macros later on, of course! 
Please, leave a comment if:
You have any additional information that I should add to this guide.
You have any suggestions about the Text Formatting.
You want to leave a comment about how it worked out.
Feel free to post macros, I am open for suggestions, hehe