The Cat Tree (aka the coolest scratching post ever):



From San Fran's Everyday Studio ,a wall-mounted scratching post framed with 16 gauge steel and available in 6 colors (I like the midnight blue I pictured). Everyday Studio writes: "Cat Tree provides a refreshing alternative to the banal carpet and plywood pieces which currently saturate the market." I couldn't have said it better.
 
The best part is that the corrugated cardboard surface can be replaced. And although it's more expensive that a scratching post should be, at $70 it's not fall-over-fainting extreme.

Both Art and Amelia would love this— Amelia because it's the cardboard type she loves and Art because he rwally likes to stand and stretch. (And as soon as I started to write this Amelia jumped up onto the desk as if to give this some feline approval).