Beyond Frustration: Three levels of happy design
Emotional Design. It's not enough to just be usable—products actually have to make people happy. I'm a devotee of TED talks. I was once assigned to watch several TED talks to deconstruct what made each a good or a bad presentation. TED topics are wide-ranging, though they generally relate to the categories that make up the "TED" acronym: Technology, Entertainment, and Design.