In case you missed the NASA Innovative Advance Concepts (NIAC) 2012 Conference, you can watch an archive of some of the talks. Dr. Jay Falker gives a number of presentations on NIAC and on the process for submitting proposals. The remaining talks are given by the 2012 NICA proposal winners. There are a number very interesting concepts. I found the idea of 3D printing of spacecraft very interesting. I wish that Dr. Peck's keynote speech on Technology and the Future was available.