All Daniel Clowes work is fantastic.
Ghost World is just perfect. Ice Haven is cute, Like a Velvet Glove Cast in Iron is strange and silly and i think he was on drugs when he wrote it. David Boring is a lot like Ghost World and Like a velvet glove. 20th century 8 ball is lots of short stories, but not as good as Ice Haven.
Adrian Tomine's Optic Nerve series is fantastic too, and he has pretty much exactly the same drawing style to Daniel.