I had a request to allow Prezis to be embedded on the CUNY Academic Commons, but the one plugin I tried for that purpose seemed to be broken and overengineered. So I took an hour and wrote my own: Prezi WP. In brief, it gives you a [prezi] shortcode for easy embedding of those Mind Blowing, Non-Linear bad boys.
It’ll be in the wordpress.org repository soon enough, but for now you can read more and download it here.