Heh, that's a good question Cheese. I am different from an average NBA fan in that I appreciate basketball fundamentals more than I appreciate someone's ability to dunk over someone and get on Sport Center's top 10.
Porter is just a fundamentally solid player. His footwork, his spacial awareness, his understanding of angles, and some other fundamental skills are just flat-out amazing for a player of any age, let alone a 20 year old. He is an outstanding defender who became a decent shooter, and has some athleticism. I see him as a much more athletic Dudley, or maybe even a Prince clone. Definitely not a game-changer, but I think he will be a SOLID contributor with a long and successful NBA career. With the fifth pick in a relatively weak draft (as far as potential game-changers go, anyway), I think we could do worse than that.