Creating a list of posts based on today’s date in custom field

This worked in the sidebar.php when using the WordPress Default theme:

<?php
   $args=array(
   'showposts'=>4,
   'meta_key'=>'releasedate',
   'meta_value'=>date('dmY'),
   'caller_get_posts'=>1
   );
$my_query = new WP_Query($args);
if( $my_query->have_posts() ) {
while ($my_query->have_posts()) : $my_query->the_post(); ?>
<p><small><?php the_time('m.d.y') ?></small> <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></p>
<?php
$filmtitle = get_post_meta($my_query->post->ID, 'filmtitle', true);
if ($filmtitle){
echo 'Film Title: ' .$filmtitle;
}
endwhile;
}
?>

Works perfectly! Thanks so much.

Any idea how I could alter it to also show posts with a ‘releasedate’ of the previous 2 days or the following 4 days?

It seems the way you have your date (19022009 dmY) in the custom field makes that near impossible with query_posts. If the releasedate was formatted like 20090219 (Ymd) for February 19, 2009, then you could do what you want–at least makes it possible with query_posts.