This is a much more AJAX friendly version of the Buzz share button:
<a href='javascript:var%20b=document.body;var%20GR________bookmarklet_domain="http://www.google.com";if(b&&!document.xmlVersion){void(z=document.createElement("script"));void(z.src="http://www.google.com/reader/ui/link-bookmarklet.js");void(b.appendChild(z));}else{}'>
<img src="http://IMAGE HERE" border="0" alt="Share in Google Buzz"/></a>
Share this on google buzz!