Here's how my friend Bill puts it:

"Jon is incorrigibly, chronically, fatally, frightfully creative. He is never not studying things, making things, or making things better. This is a guy maxing out his possible positive contribution to the world, and enjoying it."

William van Hecke
User Experience Lead
The Omni Group

I also love to improve stuff:

"Jon's passion and enthusiasm for great design can be inspirational, but belies a deeper talent. The critical eye that powers his intuition for design is also turned on refining his own work, strengthening the product of any team that includes him."

Hans Gerwitz
Technology Director
frog design

As well as debate and teach:

"Jon will keep you forever on your toes. He crosses boundaries aggressively, but with understanding and an eagerness to learn. He is selfless. He lifts everyone around him with only a tiny, friendly nudge. He is dedicated, insightful, daring, clever, passionate, and endlessly curious. It's rare for so much influence to flow from such a gentle soul."

Mike Kruzeniski
Creative Director
Microsoft

OH, AND

I'm apparently a gentle soul. Don't tell anyone.

Roar.