Don't laugh, but I've always wonder what you call those positions such as in the show 24, or CSI Miami, where they dig up information about a suspect or pinpoint their locations using computers, or analyze data. Computer forensic perhaps? Do those fields exist, and if so what kind of background or skills are required to land such a job?
Now this more ordinary - what do you call those guys who set up your laptop on the first day you start your job, or troubleshoot it? When what background or skillsets are required for those gigs?