Okay, I've divided these up between ones that could potentially spoil content and ones that are simply NPCs/scenery. I'm putting the spoiler ones on top so that no one should accidentally see them while commenting. (Oh, and if I forgot to mention my Death Knight is now level 70 and has been doing Borean Tundra. :D)
This amuses me so much.
My DK is not so secretly a hardcore dominatrix.
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I love this place it just looks so awesome (and yes I am on a flying carpet).
Scourge Plague Spreader. :o I totally want to see if it's killable.
The new blue glow they gave DK eyes looks really neat. I love it with the black fur (hair?).
Red dragon assault!
I love the look of this armored drake. I want to subdue it into being my mount. You can sort of see The Nexus/Coldarra in the background. The area reminds me a LOT of the final zone in Okami where the Ark of Yamato is for some reason.
Devilsaurs are the new popular hunter pet, especially since quite possibly the best hunter change in the history of WoW (aside from the ability to tame exotic pets). Beast levels automatically become -5 your character level after taming if they're too low. I could never replace my beautiful Nemeus, but it's great news for everyone else that wanted that level 9 flamingo in Mulgore and didn't want to have to level it!
This is the kind of damage I was doing as a level 69 Unholy DK (in Northrend starter greens). I thought I was the shiznit until a friend told me he was getting 5k crits on a level 70 Feral druid (not that I'm not happy about that, of course).
This is a rather self-explanatory debuff, but I think you only get it after you start doing quests for D.E.H.T.A. It amuses me nonetheless.
Is it just me or does the paladin epic charger look 100x better without that annoying glow? Lighting effects in general are kind of screwy in the beta at the moment. The sad thing is a lot of places look BETTER because of it. Shatt doesn't have that sickly green ambiance around it anymore and it looks 100x better. (Oh, and partial Tuskarr in the background! They look so cuddly.)
This is a winter/ice/frost-something dryad and I think she looks AMAZING. Why oh why isn't this a playable race?! D: She's gorgeous!