We linked to 3D Armory a little while ago, and as Eliah says, it does what it says it'll do: provides a picture of your character as they are in the Armory in 3D. The site's founder recently emailed us about a few improvements, and as you can see over there, there's lots of new additions. All the different regions are now reachable, and while there was an issue with special characters in the realm name, it's been fixed, so you can get any character that's online into the 3D viewer. They've added character customization, so you can make sure that the model in the picture matches your model in game. Screenshots can now be taken, and even uploaded to Facebook through their Facebook app.
And there are some inter-character features as well: you can now comment on character profiles, which might be a good or a bad thing -- you could mark a good player or maybe label a ninja (though we're not sure what kind of moderation there is for that. And finally they've created something called the PuGchecker, which lets you quickly and easily enter character names and see what raid achievements those characters have earned (so if someone says they've been to OS before, you can make sure it's true). And they've even got an ingame macro you can use to run the script from directly in the game.
The rate of development over there is pretty impressive, and the site has definitely grown into much more than just your average Armory substitute. At some point you wonder just how many of the features are necessary (if you ever want to see your character in 3D, you can pretty much just log into the game), but they're definitely getting creative.