[checoivan]

Depends on what you like doing:)

My major was on AI on college and ended up not not doing anything related to it.

More than your CS schoolwork background, I found that previous work, demos, and internships help you getting a job. In my situation I couldn't take my internship offers because of personal reasons (needed to stay with the family back home) but building demos and cool stuff helped more than the list of classes I took.

NLP is applicable on search problems and query processing .

Computer vision is good if you know a lot and are good with graphics ,on companies that do game programming, graphic apps like autodesk, but this field is though to crack.

Machine learning and datamining is good for startups, a bunch of places are doing data mining these days, or at a product like Oracle or MS SQLServer, but this groups are though, really , really though.