Computer Science Concepts to raise the bar of being a quality programmer

With more and more emphasis is made on maintainability and performance, solid computer science background is inevitable in writing quality programs. Looking back into the concepts learned during my degree, I find things that were boring those days, are more and more interesting and how they help in crafting quality programs. The higher and higher abstraction provided by modern programming languages hinders many in understanding what happens under the cover and leads many to fail to extend bounds in crafting quality programs.