400 Inscribers can make these, if you're interested (and >= Level 77):

Faces of Doom
Binds when picked up
Held In Off-hand
+32 Intellect
+32 Spirit
Requires Level 77
Requires Inscription (425)
Equip: Improves critical strike rating by 32 (0.86% @ L77).
Equip: Increases spell power by 39.

Iron-bound Tome
Binds when picked up
Held In Off-hand
200 Armor
+45 Stamina
Requires Level 77
Requires Inscription (425)
Equip: Improves critical strike rating by 16 (0.43% @ L77).
Equip: Increases spell power by 62.

They're kind of expensive and require a [43102]. I'm guessing a Death Knight might be good for 45stam, 200 armor, and crit/spell power. That said, a DK w/1h and tome...?

Unholy:
http://wotlk.wowhead.com/?talent=jZ0xxzZbxhcxfoxeqRcout

Blood:
http://wotlk.wowhead.com/?talent=jf0GqhhIsfR0uAoZbx0hxbo

Frost:
http://wotlk.wowhead.com/?talent=jZGxxt0xzRhRcsst0gh0xbo

Just a few ideas I've had about builds.  Let me know what you other prospective Deathknights think.

I'm most comfortable with the Unholy build, as it's the one I've dinked around with the most on Beta as well as looked most deeply into.

Been bumping around on my DK. It's a LOAD of fun. The levels are fast, the quests are bloody epic. Lets not forget the free ride on a frost wyrm! I'll be rerolling DK in wrath. Fist, and final. I love it.

Things I've noticed:

You get talent points as you do quests/level.

You can change NE markings, and Draenei horns at the barbershop.

You turn green if you get the bloodworm talent in the blood tree. (/sigh)

Horde/alli start at the same place, doing the same things. (yay pvp!)

PvP on a DK is FUN. (lolol GET OVER HERE).

Once you've completed the last DK quest, you can no longer talk to the lich king, or see him. You can not go back down to the questing area.

And now, screenshots!