A little while ago I did a talk at a meetup about Hexagonal Architecture which is recorded, see the Youtube video below.
For all whom are interested, you can find the demo application at Github.

The slides are available for download here.

After doing some research on the subject of CQRS I gave a workshop at de Internet Jongens today.  I will write some posts about this subject in the future but in the meantime you can find the sheets here and the demo application here.