John C. Dvorak
I've been listening to TWiT for a while - not every episode, but lots of them. One regular character is John C. Dvorak, an unabashedly cranky geek, and chair of the Cranky Geeks podcast.
I just watched a video stream of Cranky Geeks and I must say, John C. Dvorak doesn't look cranky at all! He looks downright pleasant, and like kind of a nice guy.
I'm a little disappointed.