Heheheh. We actually pre-named him Yoda a month or two before we got him. We were sure we wanted a Yorkie, but we actually were planning on getting a little girl. So at the breeder's, we registered his name and took him home. For the first few weeks, we really weren't sure if we named him right. But after the first month, he's the perfect "Yoda," from Star Wars of course. We always call Yoda the "old, wise man" too.
And keeping with the Star Wars theme, when he was little, and all black and all fur, we called him our "little Ewok."