I am so not a php coder but I did find this guy:
http://wow.tachyonsix.com/armory/

I wonder if anyone can sort through the code up there and find a way to populate the pvp tab with the arena data hot off of the Armory?

would be AWESOME to have the option to list the arena info in the sig addon too...

This is a very cool site, thanks for the link, I'll be sure to check it out!