I am continually astounded by the things my CS degree prepared me for. The breadth that my CS program gave me (UIUC) is very good: rigorous theory classes, introductory classes to systems, security, compilers and languages, numerical analysis, RDBMS systems, information retrieval, the list could go on forever.

I don't have a super-deep understanding of all these fields (who could?) but it's enough to give me quite an advantage over some of my colleagues. And I always thought they were worthless at the time.