In my spare time I am teaching myself a little about physics, something that I was really bad at when I was going through highschool (how terribly un-geeky of me). Anyway, as a lesson plan I thought I might go about getting the knowledge that I would need to implement a simple moon lander (I love moon lander games).
Right now I've mastered the basic physics required to implement the game (gravity, motion, atmospheric resistance) but I wanted to know more about collision detection (not physics strictly speaking - but this is also about moon lander remember). Anyway, one of the first hits on Google lead me to this game.
Actually, this page lead me to the game, but also this tutorial on collision detection. Time to curl up on the couch with the laptop and have a read.