I tried this
<li<?php if ($comment->comment_author_email == "myemail@example.com") { ?> class="authorcomment"<?php } ?>>
Which works, but obviously that is a defined email. So I thought just change it to this.
<li<?php if ($comment->comment_author_email == the_author_email) { ?> class="authorcomment"<?php } ?>>
But nothing?