This site has five different graphs and charts you can customize for your speeches. Once you choose a graph, you set the design, input the data, and add labels. Graphs can be printed, downloaded/saved, or emailed.
Wordle is a free site that lets you input text (such as President Obama's acceptance speech, seen below) and generate a "word cloud." Words appearing more frequently receive greater prominence in the cloud.
Prezi is a new presentation software that you can use to really WOW! your audience.