Gawd, I've been a complete whore on my DK lately.
-Exalted with Orgrimmar (yay, wolf mount!)
-Exalted with Thunder Bluff (yay, I got my title!)
-Exalted with Argent Dawn (yay, I got that other title!)
-All Burning Crusade 5-man instances soloed (...yay, Outland Dungeonmaster?)
Speaking of the 5-man BC dungeons, is it just me or are some of them complete bullshit? I was running through Botanica and wound up at one point getting hit with kidney shot and being stunned for a few seconds immediately when combat began. I can't think of any better way to cause a wipe. The tank would literally have no time to build aggro, so the second heals started going out the healer would pull and be killed very quickly. Considering how hard they were hitting me in high level WotLK DPS gear (def rating was only 400, so I was likely critable, but my armor and health pool is still higher than most BC endgame tanks would be), I can't see a 70 healer lasting more than a few hits. Honestly, I've had an easier time soloing some of the WotLK dungeons. They just feel much more balanced, all in all. You're less likely to wipe due to simply having bad luck.