The closest to "cool, shiny and new" I got was Scala. And I never found time to dig as deeply into it as I wanted, so I still haven't done any meaningful coding in it yet. But I did sit down last week and spent a couple of days working through the Programming Scala book, and one of my major goals in 2011 is to learn Scala well.
Other than that, the stuff I did this year that was merely "new to me" was mostly about Groovy and Grails. I spent a ton of time working with Grails, and I'm really liking it.
Other than that, the stuff I did this year that was merely "new to me" was mostly about Groovy and Grails. I spent a ton of time working with Grails, and I'm really liking it.