Since I became a two-time winner of the "Phil Factor SQL Speed Phreak" competition, I was asked to host the next competition.
You can find the competition here http://ask.sqlservercentral.com/questions/826/the-fifo-stock-inventory-sql-problem
The "Phil Factor SQL Speed Phreak" competitions are about everyday problems and to get people come together and give input on how to solve the current problem in best possible way.
Good luck!
//Peso