For those who are interested in open source development, there is a 5 day seminar at Portland, Oregon, USA. Join over 2,500 open source developers, hackers, experts, IT managers, and users at OSCON 2008. This year's convention will include 40 tutorials that go deep into open source technology and over 400 sessions focusing on Administration, Business, Databases, Emerging Topics, Java, Linux, Mobile, People, Perl, PHP, Programming, Python, Ruby, Security, Web Applications, and much more. This event is organised by Oreilly.
Here is the schedule.
http://en.oreilly.com/oscon2008/public/schedule/grid
Here is the official web site.
http://en.oreilly.com/oscon2008/public/content/home