Since the last Slide Effect bug fix, I have worked to integrate some new features to it.
I am glad to present to you the first new feature of the upcomming 1.1.0 version: reflection!
Reflection is available for images, standard texts and even movies!
There is now a new flag just on the bottom of the shadow flag in the properties window, check it, and you have automatic reflection on your objects.

Reflection is fully implemented and tested and I'm starting to work on some exporters for Slide Effect.