I never had any. But I only remember my dreams vaugely anyway. It's a strange concept and I have no idea how to alter my subconciousness accordingly. Then again, I think I had one, that was a collection of memories about a black and white film/video game. I don't remember much anymore.

But on an intresting note. I have a friend from Mexico and he recently became fluent in English. He has dreams with people talking in Spanish, even people he knows from America.