In the wake of Maurice Sendak's recent demise there's been a slew of articles on Sendak and his work, as expected. There's a quick run down below of several good interviews and obits.
I grew up with Sendak's art in the Little Bear stories which are pretty storeis in the texts but the illustrations give them an almost Gothic/Victorian air. This fits with some of things Sendak says about writing kids books in the articles below. The Rosenbach Museum in Philadelphia has, or at least had, a bunch of large format illustrations from Where the Wild Things Are which are worth stopping by and seeing. I've started to keep an eye out for Sendak's name in the illustration credits because he pops up a lot. While WTWTA put Sendak on the cultural map, the sheer reach and quality of his work is definitively worthy of admiration.
NPR Fresh Air interview from several months ago
Stephen Colbert interviews Maurice Sendak (January 25, 20120)
NY Times Obit
Interview/Retrospective of Sendak at 80
Guardian Interview with Maurice Sendak