<?php

/**
 * Answer to : http://www.reddit.com/r/Wordpress/comments/12k75o/how_would_i_list_10_blog_entries_total_5_of_which/
*/

$query = new WP_Query( array(
    'posts_per_page' => 10
) );

if( $query->have_posts() ) {

    $idx = 0;
    while( $query->have_posts() ) {
        $query->the_post();

        if( $idx < 5 ) {
            // Do stuff to display first 5
            printf( '<h2>%s</h2>', get_the_title() );
            the_content();
        } else {

            // Do stuff to display the last 5 (title only)
            printf( '<h2>%s</h2>', get_the_title() );
        }
        idx++;
    }
}
wp_reset_postdata();