Heidegger is perhaps less well known than other existentialists such as Nietzche, Camus or Sartre. But on the other hand along with Kierkegaard, Heidegger is no lesser the thinker, - in fact quite the opposite. His analyses are deep and penetrating and to use similar terminlogy to his own they shed much light, or understanding, which in his view is the aim of philosophy. Sartre was much influenced by him but like Nietszche sought the limelight in a way that Heidegger didn't - hence perhaps the amount of visibility apportioned to each one. Instead of the disinterested subject of previous philosophies, Heidegger denotes being and its attitudinal stance to the world, its concern with projects and its being in time and the necessity of death, in being's fully participating in the world. Michael Inwood provides perhaps many of the main ideas in Heidegger's philosophy as well as background information about his life in this short introduction. Excellent.