I made an attempt at a slideshow with Slideroll and some of my robot pictures:
Overall? Not bad. It’s easy and free and looks pretty good. I think i prefer iMovie, though… it’s been a while since i used iMovie, so maybe i’m remembering it as better than it is, but it definitely has more features and i know how to use it well enough. For example, i am way too lazy to make a separate image for the title slide or credits of a slideroll, but i know how to just type them in with iMovie. I might end up remaking this, then.