Hi John,
I too thought "Ripple" was the name of the transition. I think I understand your question now.
The only transition that I know of that can be "rippled" through all your video clips is the Fading transition. At the top of the transitions area, there is a dropdown with the "Apply Fading Transition to All" option.
If you are making a slideshow, PowerDirector has a feature that is pretty cool. Once you have a few pictures in the Timeline, you can select them all and a "Slideshow" button appears. There are different options for your slideshow, but I think Motion is the coolest
Hope this is helpful,
Brady