Stop wordpress from wrapping images in <p> tags

gistfile1.txt

// stop wordpress from wrapping images in <p> tags
    function filter_ptags_on_images($content)
    {
    // do a regular expression replace...
    // find all p tags that have just
    // <p>maybe some white space<img all stuff up to /> then maybe whitespace </p>
    // replace it with just the image tag...
    return preg_replace('/<p>\s*(<a .*>)?\s*(<img .* \/>)\s*(<\/a>)?\s*<\/p>/iU', '\1\2\3', $content);
    }
     
    // we want it to be run after the autop stuff... 10 is default.
    add_filter('the_content', 'filter_ptags_on_images');

    //http://snipplr.com/users/rliverman/