On the Differences Between MIS/CIS/CS Degrees?

Dark Ninja asks: "I find that after having a professional IT job (C++ programmer/DBA) for four+ years, not having a degree is a hindrance to finding a job. So with this in mind, I'm planning on attending college soon, but I want to know the difference between an Management Information System, Computer Information System, and Computer Science degrees? Better yet, which ones do you suggest (ie. to allow advancement, which allows for what jobs, etc)?"