iSpazio DockFlow is a mod that I noticed last night. It changes your dock icons giving them a cover flow look. It actually looks pretty cool however, there are a few restrictions with it. You need to have a five icon dock, the icons have to be specific icons in a specific order (Safari, SMS, Phone, Mail and iPod) and you cannot use it with other mods such as Stack. But, if you are willing to deal with these restrictions is does look pretty cool. Once installed, you will need to activate it via WinterBoard.