I have a client who wants me to do a cover flow type effect. Before I design one from scratch, I thought I might see if one exists. I did a quick Google search and a search here, and didn't see one.
If you're planning on pulling this off in FCP then Piero Fiorani offers some nice plugins ... amongst them is Reflections. That one, and a 3D move using Apple's Basic 3D or my own Better 3D hack of the same, should make building the effect easier.