Great Debates in Astronomy(site info)
Following in the footsteps of the famous April 1920 'Great Debate' between Harlow Shapley and Heber Curtis, this series of debates among leaders in the astronomical community highlight major quests in astronomy and astrophysics in an open forum at the turn of the millennium.
http://antwrp.gsfc.nasa.gov/diamond_jubilee/debate...
Introduction to Cosmology(site info)
These notes form an introduction to cosmology with special emphasis on large scale structure, the cmb anisotropy and inflation. In some places a basic familiarity with particle physics is assumed, but otherwise no special knowledge is needed.
http://arxiv.org/abs/astro-ph/9312022