tabbed "most popular posts" page template !

hi
i created a “most popular posts” page tamplate
you can use it from here
i used jquery tab content, two tabs are :
1 – most viewed posts
2 – most commented posts

one bug in this template !
if you can solve my problem,
my tab not working when i use this code

<?php $result = $wpdb->get_results("SELECT * FROM $wpdb->posts ORDER BY comment_count DESC LIMIT 0 , 9");
foreach ($result as $post) {
setup_postdata($post);
$postid = $post->ID;
$title = $post->post_title;
$commentcount = $post->comment_count;
if ($commentcount != 0) { ?>

when i replaced <?php $result = $wpdb->get_results("SELECT * FROM $wpdb->posts ORDER BY comment_count DESC LIMIT 0 , 9");

to

<?php $result = $wpdb->get_results("SELECT comment_count,ID,post_title FROM $wpdb->posts ORDER BY comment_count DESC LIMIT 0 , 10");
it working but post excerpts not showing … what can i do ?

i want to show “post excerpts”

i tried all <?php the_excerpt(); ?> excerpts code but failed to get excerpt

please help !!