I have an unusual name, I've only ever met one other, and on the ONS list there were about 30 last year. I love the fact that if I hear my name it's me that's been spoken about, so wanted the same for my children.
(Not going to out myself completely, but it's a musical instrument like a piano but with plates not strings & it means "heavenly", or sky blue in Spanish.)
DD is named after a tiny Cornish island, we love the place and when I was pregnant I was googling for pictures of it and pictures of girls kept appearing so it was an obvious choice. The year she was born there were 4 on the ONS list, last year it had doubled to 8! 
Currently trying to find a name for DC2, due in 2 weeks! We've got a girls name, Anya, it's more common, but still quite rare. Still no decision on a boys name. They all seem to be either really popular, too old fashioned, or wacky. I've been trying to persuade DH into liking Seth for 5 years, it's getting more popular but still unusual, and DH still hates it.
Childtwo is quite unusual isn't it. :o
Going to scour the thread for names now :)