Science Fiction and Specualtive Fiction -
Diamonds In the Sky an anthology of astronomy based fiction.
Trunk And Disorderly Charles Stross (audio book) - very very very funny.
Graphic Novels -
Fable vol.1 Bill Willingham. Blood, guts and intrigue when the creatures from fairy tales are forced to live in our world.
Therefore Repent - Jim Munroe. Post Rapture weirdness.
Aaaaaand Gutenberg's aural equivalent -
Librivox a project to record all public domain books for free distribution.