Slideshow Wallpaper app?

[grammartroll]

Windows 7 has a cool feature built in that lets you set up folders of custom images and then have your desktop background cycle through them. I want something like this for my Incredible, and can't find anything. Anyone heard of an app for this?

Also, I think it's dumb that I can't select an image from my Droid Flickr app and turn it into a wallpaper on the fly. That just CAN'T be right, it's so lame!