As soon as you talk about jobs and statically typed language, my preference goes to Java. Though there is a great market in .NET and C# but you are limited to MS platform (unless mono picks up in a big way.).
A good way to find trend in books about a programming language and github/google code like sites. So going for Scala now may to give you any advantage in the next 5 years or so.
A lot of companies in SF & NY (Yammer, Twitter, 4sq, for example) use Scala. These cities are pretty cutting-edge in language choice, and I'd imagine these practices will expand geographically as devs migrate to new places.
I'm interning at Knewton, and we have this posted up on our jobs page:
http://jobs.knewton.com/apply/xYwHXb/Software-Engineer-Scala...
and Twitter has this listing:
https://twitter.com/jobs/positions?jvi=ospeWfwL,Job
Good luck!