I had a GIS class a few semesters ago. It was really a difficult class having never used GIS and learning it distance ed but it was a good class and I learned a lot.
It's good stuff. I was just going for a forestry degree at the time, but the way the industry was(still is), GIS seemed like it would give me a little more flexibility. It's not tied to any one industry and it's really been gaining steam the last few years.