If you want to create cool 3D animated charts with growing bars and such you can do them simply with Keynote in a few simple steps.

1. Create the chart, menu: Insert / Chart.
2. In the Inspector palette under the Charts section click Edit data and input your data.
3. In the same area you can set up the looks of the chart.
4. Now click the Build inspector (little yellow diamond) and within the Build in tab select the 3D-Grow effect.
5. Here you can time the animation too.