Volkswagen came up with wonderful interactive banner to help you choose a car. Hardly anyone will actually make decision based on suggestion, but many people will try for the fun of it.
Uniqlo is a company that's not afraid to test unorthodox interactive ideas. One is a clock widget embeddable into a webpage. It's simple but aesthetically pleasing application with Japanese girls dancing. The widget was installed to around 250 000 unique pages and was viewed at least 100 million times.