Thanks to my friend Andrew Sullivan on Facebook, I found this blog post, which talks about a linguistic study of contrastive reduplication. This is a very common phenomenon in colloquial spoken English, though you've probably never noticed it. Examples are things like this.
"Well, it was big. But not BIG-big."
"Sure I like him. I just don't LIKE HIM-like him."
So if you'd like a good giggle about reduplication in English and other languages, check it out.