Here's a classic demo that really spells out HPs vision for improving business performance using Service-Oriented Architecture...

HP SOA

This is really well executed. Following the brief introduction, which is all about why SOA is so important and HP's role in delivering it, the viewer is presented with a diagram (shown above) that serves as chapters for the deeper story. Those chapters are also navigable in the footer. It uses really nice transitions, rules and colors match HPs brand, it keeps the eye focused on what's most important, and is entertaining while also seriously informative.