I like to play around with Swift3D in Flash, but not Erain has released a Swift3D plugin for Photoshop CS4 Extended. It helps out in creating simple 3D objects in a Photoshop environment. Using this with Photoshop filters really is cool.
If you already have a Swift3D serial number, you can purchase the plugin for $99. Others can get a 15% discount for the full version at $149.