On thursday 16th of February I have demonstrated JavaFX capabilities at ToulouseJUG monthly session.
The talk lasted 1h30 and has been done entirely with a JavaFX 2 application.
You can find it here : www.jrebirth.org/apps/toulousejug.html
All code source is available on GitHub (from toulousejug tag since application has evolved) : github.com/JRebirth/JFX-Presentation