Show all comments by author

i am also looking for this.
anyone???

Try this, it worked well for me:
http://www.flisterz.com/2008/08/09/wordpress-show-latest-comments-for-each-post-on-main-page/

The author has it set-up to only pull the two most recent quotes, but you can easily change or delete that line altogether.

For more than two post, change the “2” in the first line below to another number:

<?php if ($count++ <= 2) { ?>
  <li><?php comment_author_link(); ?>  <?php comment_excerpt(); </li>
<?php } ?>

To remove the limit altogether, delete the first and last line above, leaving only the middle line of code, and you will get ALL comments for each post (this could get a little hairy at some point).

Good luck,
Atg