Vouch. I remember spending the entirety of my math class writing games on my TI-83+. I still hate my instructor for wiping my memory when she thought I was playing them and not writing them.
I remember the day I discovered an assembly program that mimicked a memory wipe, but could be restored with a hotkey combination. I was so damn smug after that.
Edit: https://plus.google.com/108914556664474359662/posts/K1xhEEtk...