To be clear, I'm not advocating taking a bunch of random classes to be a well-rounded person, although, sure, why not.

I'm advocating taking enough classes in some other, specific topic that interests you (like, say, linguistics) that you can now apply for jobs where you program using your domain knowledge of this other field, as well as your CS skills.

At most colleges, taking a bunch of classes in a single subject usually results in a major or minor; additionally, the extra lines on your diploma that say you also know a lot about, say, structural engineering will help you when your resume is on the desk of a firm developing CAD software.