Well you can animate can bring in your own images and then select transitions to apply to them.
I just published a review of Secretlab's Titan chair.... edited entirely in Rush.
In the video I imported several graphics and then have them move up/down or right/left to enter in and out of the frame.
Rush is great... but it is very very very basic. Premiere Pro just has more options. I love Rush, and will continue using it. But... if I want to do things with more substance and cooler things I would pop over into Premiere Pro.
Rush is made for beginners and is an app that is really fast to do quick editing in. Which is great, as sometimes I just want to do little things quickly.