I currently manage scheduling for the linux super-cluster at Vanderbilt University. We provide computational resources for groups doing research into everything from antibody protein research, through surgical imaging, to dark matter and dark energy research.
Personally, my visage hasn't changed in all these years; and I still do not worry.
Q&A for professional and enthusiast programmers
Q&A for those interested in logical reasoning
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Q&A for scientific skepticism
Q&A for professional programmers interested in conceptual questions about software development
Q&A for people studying math at any level and professionals in related fields
Q&A for computer enthusiasts and power users