I would think you could do this with Apple's Motion app.
If you decide to do it yourself, consider getting the video training offered by Mark Spencer at Ripple Training.
There is a Motion discussion group at Apple Support Communities here.
You might post your question there and ask if the regulars think this could be done in Motion and if they know where to find freelancers.
Thanks AppleMan. This is a good start. I'll post in Motion 5. I need to find some other examples of "animation" clips I like so that I can convey a better sense of what my needs are. Initially, I am not too interested in buying Motion, paying for a tutorial and learning how to use it b/c I don't think my long term needs justify doing so. Plus - it just seems like the scope of this effort (to do this documentary) keeps growing and growing. As it is, I'm the writer, director, producer, editor, content aggregator and filmer. Just trying to find a way to "outsource" some aspects of the film.
[edit: plus, I'm only using iMovie 11 and not using Final Cut Pro FX to make this documentary.]
… I need to find some other examples of "animation" clips I like so that I can convey a better sense of what my needs are.…
your example shows 'pictures', but it is the same 'techniqué' as
Kinetic Typography uses.
And for sure, there are many tutorials for Motion 5 showing how simple it is, using Motions speciality 'behaviors'....
… although, your example is no beginners task!