If you haven't checked out Blizzard's Holiday Dessert Contest Winners - you totally owe it to yourself to have a look! It is downright amazing what some people can do with fondant.
I think the Horde Night Before Winter Veil cake did deserve to win - if only for that blood elf snuggling a teddy bear (of course blood elves sleep with teddy bears! why didn't I realize that before!) but the Icecrown Citadel cake is also fantastic.
And it's inspiring! Girly Pally has a birthday coming up next month, and now that I think of it, nothing says "Happy 30th!" quite like a sugary Frostmourne sticking out of delicious cake... ;)