At my current job, we're doing "boring" J2EE stuff, but not a day goes by without someone in the office discovering something new and exciting, and talking about it. We've tried three times to crowbar some Scala into the project, just to see if it sticks (it didn't, unfortunately), we're all excited about Ruby and Python and we know how they stack up against Java.
That's building skills before you need them. If my colleague from the former job is fired, he will need to land exactly the same position somewhere else, while we're much better aligned to switch to something else.