I have been very impressed with JavaFX 2.
With Scene Builder and Experience Tools, one can create a fantastic UI in no time.
I just love how easy it is to CSS the application, how refreshing the L&F is.
If Oracle manages a successful marketing campaign, JavaFX will rock many boats...
This is the blog you need to read regularly, I have decided to write all my new UIs in FX and Scala (thanks to ScalaFX)!