This is my main build, http://www.wowhead.com/?talent=j0xZhxZfgoI00ogeVocsut once dual spec goes in I'll have http://www.wowhead.com/?talent=j0EMZGxxthcdRhR0ssx0g as my secondary for raid tanking bosses. I played around with perma ghoul and tossing a ghoul at people and blowing him up via Corpse Explosion, but I ended up going back to the first build. There's a lot of good info for DK tanking found here:
http://www.tankspot.com/forums/f14/4...rotations.html and elsewhere on their forums.