I've started a little weekly and biweekly code challenge at my forums at evilmana.com
Each challenge will request a certain idea to be programmed. Anyone may enter their code. Winners will be decided by votes from users and mods.
This weeks challenge is weather simulation.
I made my own little entry which is a Christmas snow scene.
This is all for fun to see what people can come up with.
Feel free to join in. :)