Heh, when I worked as a designer/CAD monkey I once spent about a week learning basic autoLISP and putting together a couple of very simple plugins, despite having literally no programming experience. Actual nightmare. Added bonus, the plugins weren't really all that useful as they duplicated tasks that only took ~30s each, down to maybe 10s with the plugin. They were nifty and I am proud I did it but god damn. I had thought they would take maybe an hour or so each. I was wrong.