Rudy Rucker - Infinity and the Mind -- You gave me that one. (actually my husband Pat gave her that one)
Carlos Castenda - The whole series - especially Journey to Ixtlan and the Art of Dreaming
Ram Dass (Richard Alpert) - Be Here Now -- did you ever realize that there was a Richard Alpert on LOST?
Issac Asimov - The Foundation Trilogy
Douglas Adams - Hitchhiker's guide to the Universe
Clive Barker - Weaveworld, Imagjica