Giratina is a pretty cool pokemon. Personally I prefer it's alt form, which do you like more?
It looks so comfy I wish I could get one.

Personally I like it's earthly forme, but I'm happy with either of them. They did really well on that pokemon in my opinion. My only disappoint is the lack of fire attacks. lol
I used to have an entire team of Giratina, each had it's signature move which I can't remember right now, along with Draco Meteor and two other typed attacks. :3 That team also had a Shiny Giratina that I found on my Platinum. :P