Here is my armory:

The World of Warcraft Armory

If you noticed in the Expertise field, it says:

Expertise 102
Reduces chance to be dodged or parried by 9.25%
Expertise rating 37 (+25 Expertise)

However ingame, IIRC it says something like 6.5%. I can't get ingame right now to verify this but I always remember that number because that's what I was told was the dodge cap, and I geared myself in general to be around that. But armory is showing a much higher number. Which is right?