In my “San Francisco podcast”:http://www.manton.org/2006/09/san_francisco_podcast.html I mentioned Enrico Casarosa and “Sketchcrawl”:http://www.sketchcrawl.com/. I really wanted to interview him, but there just wasn’t time to contact him and arrange it. Luckily, Illustrationmundo’s Iconic podcast has conducted an “interview with Enrico”:http://www.illustrationmundo.com/audio/artist/85/ and they discuss Sketchcrawl at great length.
Also, check out Enrico’s ongoing watercolor comic, “The Venice Chronicles”:http://enricocasarosa.com/wordpress.1/?page_id=453. He just posted page 11 and 12.