You haven't lived until you've experienced a quality core dump
Comp Sci cryptography bore here who wrote embedded and real-time C code for seismic surveying, mainly crypto and compression with a bit of 3d graphical processing. I knew it was time to do something else when i wrote a cheque in hexadecimal (true story)...
[edit] and I'm still cursed with using Vi for everything, documents particularly that i then get pasted into Word

