Engineering: Computer Networks, A Top Down Approach (Keith, Kurose) & Other Networking related books (by Tannenbaum, Mir, etc.),  Communication books (by Simon Haykin, Proakis, Taub & Schilling etc.), Cognitive Radio Networks (by Yang Ziao, Fei Hu) and other books on Cognitive Radio Networks, Digital Logic (Ronald J. Tocci) etc. etc.

Science (and Physics):  Fundamentals of Physics (by Halliday, Resnick and Walker), Concepts of Physics by H.C.Verma, Problems in General Physics (by I. E. Irodov), Holographic Universe by Michael Talbot, The Elegant Universe by Brian Greene, The Body Electric, etc.

Fiction: Jonathan Livingstone Seagull by Richard Bach, Illusions - The Adventures of a Reluctant Messiah,  Siddhartha by Hermann Hesse.

Philosophy and Psychology: Man's Search for Meaning, Tao Te Ching by Lao Tse, Bhagvad Gita, Yoga Vasishtha, Thus Spake Zarathustra by Nietzche, Adler and Jung's Works, Giant Book of Laughter.

Sketching and Painting: The Fundamentals of Drawing Portraits, Works of Leonardo Da Vinci, Works of Alex Grey (http://www.alexgrey.com/), Paintings of Khalil Gibran,

Poetry: Gitanjali by Rabindranath Tagore, The Prophet by Khalil Gibran and all his other works including (the forerunner, thoughts and meditations, etc.), The songs of Kabir, Mirabai, Rumi and Lala, Works of Emily Dickinson and Sarojini Naidu. 

Meditation and Yoga: Light on Yoga by B.K.S Iyenger, Discourses of Osho, Yoga Sutras by Patanjali,  The Gospel of Sri Ramakrishna by Mahendra Nath, All Discourses of Swami Vivekananda, Raj Yoga by Swami Vivekananda, Books of Sri Ramana Maharshi

Biographies and Autobiographies: A Search in Secret India and other works of Paul Bruton, The Autobiography of a Yogi
The List includes the Biographies of most of the mystics, scientists, poets and enlightened men: Jesus Christ, Mohammed, Buddha, Sri Ramana Maharshi, Ramakrishna Paramhamsa, Swami Vivekananda, Osho, Swami Ramatirtha, Sufi Saints - Rumi, Kabir, Nanak, Mystics from Japan and China: Lao Tse, Milarepa, Naropa, Marpa, etc., Einstein, Newton, Kahlil Gibran, 

and more  ;)

Fav Authors and Speakers - Kahlil Gibran, Tagore, Osho, Swami Vivekananda, Paul Brunton, Victor E. Frankl, Richard Bach.