I'm actually in the process of getting involved with the US Army now (I'm 21) so that I can get some schooling and stuff done later, but I've thought that I might spend my off-time for the next few years trying to self-teach myself NetREXX or something and try to land a job in some MegaCorp. I'm not opposed to writing code all day in a comfy office chair with full benefits etc, especially compared to living in a dorm with couple dudes eating Ramen and trying to conquer Web 4.0 or whatever. Just doesn't appeal to me.
It's reassuring that it's a viable career path, I hadn't thought much about the new generation of mainframe maintenance, but from what my dad has told me about some of the people he's worked with it certainly makes sense that these big corps would be desperate for fresh meat right about now.