Just like the products and services they sell, company logos have a tendency to change over time. In this series of animations by Nick DiLallo, you can see how the logos of six big firms have changed over the years.

What's nice about them is that the way that the transitions are appropriate to the company in question; so the Apple animations are cued by dialogue box clicks, while the UPS logo shuffles onto the screen to the sound of delivery truck. You can watch all six here. [YouTube via Verge]