Today I purchased a black skin for my beloved 8900, just like this one:
Blackberry Source.com - BlackBerry Curve 8900 Skin Case (Black)
The only thing difference was the price, which amazed me: 3$. The quality of the rubber is A+, never thought it could be this goos. It so smooth it feels like velvet.
Anyway, on my way home, I thought about starting this thread. This way we can give some info and ideas to others about what to shop, where, how much it costs and the most important thing: if it's worthed!