You can now create enhanced Yahoo! Search results pages by embedding flash video, games, and documents using SearchMonkey. Adding a few lines of code will make it appear as an enhanced result after Yahoo! recrawl your page. We are supporting the use of RDFa and Facebook Share markup to power such enhanced results.

For e.g. Hulu created an enhanced result for a clip from The Simpsons with the following code:

…and the result is:

….when users clicks the thumbnail image, an expanded video drops down:

More info: SearchMonkey: Getting Started

Source:→ Yahoo! Search Blog