There are already a few good posts on VMworld 2014 sessions to attend. Those that have the full conference pass or VMUG Advantage can always view the sessions at a later date, but I always like to attend a few live sessions for the interaction. This is my current list of must see VMworld 2014 sessions!
Come hear Michael and Harold reveal their secrets on building a world class design!
STO3008-SPO - Decoupled Storage: Practical Examples of Leveraging Server Flash in a Virtualized Datacenter
An absolute must see session from two masters in their own right!
NET1401 - vSphere Distributed Switch Best Practices for NSX
I think this will be a good discussion on getting started with NSX from a design perspective.