Interesting interview on the Amazon page for How Graphic Novels Work and What They Mean
Amazon.com:What do comics--the writing and the pictures and the narrative combined--give us that other art forms don't?Wolk: The most important thing comics give us, I think, is drawing that makes a story. What you're seeing when you look at a page of comics, you're not just looking at a bunch of images that represent a plot, you're looking at something that came from somebody's hand--a deliberately distorted world, changing over time, built by a particular artist, line by line.