Learning Scala right now. Seems it fits nicely as the NBL according to Steve Yegge's criteria:

#1 C-like syntax (might be closer to Ruby actually)

#2 Static-typing but feels pretty dynamic due to extremely good type inference

#3 Perform on par with plain Java

#4 IDE(Eclipse/NetBean) support

#5 Everything in the "Kitch sink" section included + Actor-based threadless concurrency + easy to write embedded DSL + (I heard even continuation is coming soon). So what's missing is a macro system ...

#6 JVM so multiplatform by default (even on Android)