Here are a few samples to help you start your thinking.
With iMovie, you do not have quite as much freedom with your typography, but something similar is still doable.
This is a great example of using captions and images to illustrate your poem.
Though this isn’t technically a poem, it’s a great example of how images and music complement the text.
A final resources is the Poetry Foundation.
Here are two more very cool videos.
Great use of imagery.
Excellent use of animation.