I also felt that this was an excellent talk on Composer! This is something that's been missing from PHP for quite some time, and now that I know it's out there (and working) I plan on immediately using it. Thanks, Jeff!
This was a great talk about Composer and how it can help PHP developers maintain project dependencies in a sane and efficient manner. All questions were answered well, and I left with an urgent sense of excitement at the prospect of adding Composer to my daily development.