Best expandable I've seen in a while, this People_Ready banner from Microsoft contained 3 unique videos. Each of them was entirely visceral, stimulating, and beautifully illustrated, edited, and designed. So much content, such a small space. I'm sold.
I especially enjoy the edginess of the art and the artistry of the storytelling—very unusual in this business space. It almost feels inappropriately fun, but the attention it garners soon dissolves that notion replaced with a respect for the holistic and unified communication (not the IT paradigm).