• How to calculate the distance between two points on the Earth's surface without resorting to exotic stuff like spherical geometry.
• No more ugly pdfs with LaTeX. Please, help spread the word that LaTeX can create beautifully typeset pdfs instead of the ugly stuff some people generete.
• Output generated by the MiMiR-project, the Mission for Moon Ice Research!
• Calculation of adiabatic flame temperature of H2+O2, not dissociative [dutch,pdf]
• a summary of trigoniometric functions, mirrored from http://aleph0.clarku.edu/~djoyce/java/trig http://www.clarku.edu/~djoyce/trig/.

Scheduled to arrive here within several years: my special enhanced notes for, aka the engineers survival guide to 'Vliegtuigsterkteleer I' (Analysis of flight structures) , probably the course with the worst notes ever (which still doesn't make a good excuse for not passing this exam).

Update: This course has dropped the lecture notes and is now using a book!