As I have made various presentations on the ministry in Uganda in the past few weeks, I have been using a combination of photos and videos and Prezis. I love Prezis! They are like PowerPoint, but much easier to put together and I think they are more interesting, too.
Here is a Prezi I created about Uganda that has been modified several times. If you are interested in creating your own Prezi (up to 100MB for free), then go to www.prezi.com.