Yes, so did I... but I don't really see what it adds really? I have mine extended to an external monitor via HDMI, a Bluetooth mouse, and the Type Cover. I wish I needed the Docking Station, I really do! As I think it looks really cool, but I just don't see any advantage.
It's easier to plug in and not mess with cables and it has 4 USB ports. I would not say it is a necessity by any means and it is rather pricey. I just decided to go all in and buy myself a second xmas present (got my SP2 a month ago). I can say it is very well made and feels sturdy.