Aww brother... out of many recent ones, this one is a tough one for me. I used to read his columns in Infoworld and Mac User before the blogs. He was a frequent guest on TWiT, but it looks like he and Leo had a falling out. No Agenda too, but that took a turn a while back when Adam found religion. I always relied on his (not always PC) cracks to lift my mood.
RIP my mentor that you didn't know you were, Valhalla awaits.