10-15 years ago I saw a fantasy movie, in which people's "true name" gave immense power over them.
So everyone tried to hide theirs.
I think the main character got chases by someone or something, and tried to find out its name to stop it.
At some point he asks a dragon about it, and there's the classic question trick:
"You have two questions."
"Isn't it three?"
"Yes, but you used one up just now, so it's 2 left."

Anyone remember the name? I never watched all of it, and I'd like to know if it was good or now.
I know the colors were mostly bluish black and greys.