diary record
When I was a student, I have written a little program to model a glissade of a descending plane, as a part of some study task. Not a rocket science, still involved an itty-bitty pinch of differential equations, required some effort (and was not fun). That resulted with a thin white line on a black screen.
Anyone seeing it shrug their shoulders, like "ok, nice".
Also I was interested in graphical effects, and I can tell you that modelling flame is a basic arithmetics. Initialize a bottom of your display matrix with random (or you can play with it) colors, then go over every pixel calculating average of values of surrounding ones, and put that result one pixel higher. Looks awesome. Anyone seeing result was like "wow, you're a hacker man!".
Here probably should be some kind of morale but to be honest, I love that flame effect better myself.