Amana has an interesting experiment going on: it is allowing viewers to help them pick which design to go with first. In exchange, they will use your selections to help determine your personality (apparently mine was too eclectic for them to decide!)
This is a simple and smart idea. They get feedback from potential buyers, potentially get some viral marketing (a link to sites like Facebook or other social networking sites would be helpful), and get to promote their ideas. Plus, they also get to see which ones are big hits and which ones are big misses. (Speaking only for myself, my most favourite was Green Tea and my least favourite was Mojo).
If you have wanted to engage your clients more, consider what Amana has done: