I'm delighted to be a minor part of the Go launch today:
Go is an experimental language from Google that I've been coding in for the past month or so. It sits in a similar niche to Java: performant but garbage collected. However, it's vastly more enjoyable to code in than Java!
Thanks to a suite of compilers, it compiles to machine code very quickly. There's also a frontend to GCC in the works. It's runtime and type safe, concurrent, has a novel (for me, at least) take on object orientation and provides runtime reflections on types.
Personally, I think it gets a place in my list of favoured tools, which currently contains C, C++, Python and Haskell.