I'm biased (currently a PhD student), but I think your employment prospects are pretty good with a CS PhD, especially if it is (a) from a good school (b) in som

I'm biased (currently a PhD student), but I think your employment prospects are pretty good with a CS PhD, especially if it is (a) from a good school (b) in something practical (a PhD in theory might still let you get a job at somewhere like Microsoft Research, but it depends on what kind of theory; a theory PhD would be less helpful for most startups). With a CS PhD, you have a lot of options: academia, industrial research (Microsoft Research, IBM Research, and so on), working for or founding a startup, etc. Happily, many CS graduate schools and professors explicitly recognize that many grad students don't intend to pursue a career in academia, which I think is less the case in other academic fields.