Really high on this kid too! The Kirilenko comparison is dead on, but Gordon is/will be a bit more athletic than Andrei.
On D he is the type of defender to put on Lebron, Melo, Durant, Gay, etc... and give them troubles. He is long, quick on his feet, smart. No problem guarding a pick and roll action. No problem on switches 1-5.
Raw offense so far, but it is not like the Matrix or Kirilenko are killing it from the outside too. Very good handles for someone of his size. The kid is still 18 (September 1995).
Anywhere from pick 4 on-wards I would be excited with him.