The Pierre Auger Observatory is design to reveal the origin and nature of the highest energy particles observed in nature. The construction of the observatory is almost completed. It has been taking data since January 2004 accumulating an exposure equivalent to 0.8 years of the completed observatory. I will report the first physics results obtained with this limited data set: the existence of a flux suppression at the highest energies, the anisotropy of the highest energy cosmic rays and its correlations with nearby matter, and comparisons of the shower properties with current hadronic interaction models.