Linda Dong used Apple's Keynote app to make the above motion graphic piece. What's most impressive - besides her obvious talent - is how fast and easy the process was:
I was experimenting with Keynote's animation tools and decided for fun to make a short animated motion graphic to showcase what the app can do. It's pretty impressive how much Keynote can stand up to pro animation apps like After Effects and Motion and how fast it makes process. Honestly the most time consuming part of this was trying to get an adequate screen recording (video codecs blah).
She has posted the project for dowload (so you can see how it works) along with some great tips on her site.