Why is this so special? This card was a gift from Ethier, and it's personalized to me. I think that's pretty neat.
You'll notice that Either's signature has changed significantly from the one Topps is using for the facsimile autograph on his card. The older one was much more legible, but I imagine that the newer one is quicker to sign.
I'm only putting autograph-related links in this blogroll. However, if you have a blog or a collector site not specifically about autographs, but with an autograph page or an "autograph" label on your blog posts, I'll put that link here.