What did you learn at college that you use on a daily basis?

People go through and talk about their college careers and how they don’t use anything they learned and yada yada. Well I started thinking about it, and while even I have said that, its really not true. I do gas chromatography at work, which I learned the principles and operation of in college. Not to mention all the basic tenants of Chemistry that I practice on a daily basis. Safety procedures, proper lab procedure… Use them all daily. When I finally land a job doing forensics, I’ll use at least some of my minor of Criminology (a lot of it is psychological/sociological stuff that I imagine would be at least somewhat helpful). That would probably also tap more into all the Biology, Biochem, O-Chem, and even Physics work (kind of pending what department of forensics I find myself in).

So what about you? What did you learn in college that you use regularly?