There is a plugin from FXFactory called Photo Montage that works in both Motion and FCP. Photo Montage is a generator and it allows you to control your slide presentation from within Motion or FCP. It's not cheap $200 but it does what it says it will do and it works. Of course, you could always build the frame like the one shown (in the link you provided) In photoshop and then place your photos in the frame and then animate the behavior in Motion but... that takes time. Time is money. Check it out, I think they offer a free trial as well. There are a lot of plug int effects you could examine at FXFactory and some of them are free so I would suggest that you at least download the FXFactory 3.0 downloader. You'll use it I promise.