Team Fortress 2 - Charity Event

There's currently a charity event in Team Fortress 2 for japan.

The tradegy in japan caused Valve to implement a charity event in Team Fortress 2. You can buy three different and limited in-game hats, the "Humanitarian's Hachimaki" ($7.99), the "Benefactor's Kanmuri" ($19.99) and the most prestigious "Magnanimous Monarch" ($99.99) will be available until April 6, 2011. All three hats can be worn by all classes, but cannot be traded or used for crafting.

Source: teamfortress.com