Filters: Vimeo Embed Filter
Vimeo embedding doesn't always work on IE8 or IE9. This is apparently because of the code inside their iframe-based embed code. Most developers are now ignoring IE8 problems, hoping the browser itself will quietly go away.
Vimeo's older embed code used object tags, which oddly enough work fine in IE8. This filter simply identifies the browser and renders vimeo's boilerplate embed code for the numbered video in either iframe (modern) or object (IE 8/9) notation. It uses a shortcode style annotation to simplify the code for the video you are embedding.