Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 14044)
+++ wp-admin/includes/template.php	(working copy)
@@ -885,8 +885,22 @@
 	<?php
 	$hclass = count( $hierarchical_taxonomies ) ? 'post' : 'page';
 	$bulk = 0;
-	while ( $bulk < 2 ) { ?>
+	while ( $bulk < 2 ) {
 
+		// allow plugin to replace the popup content
+		$filter_name = 'wp_';
+		$filter_name .= $bulk ? 'bulk' : 'quick';
+		$filter_name .= '_edit_';
+		$filter_name .= $screen->post_type;
+
+		$content = apply_filters( $filter_name, '' );
+
+		if ( ! empty($content) ) {
+			echo $content;
+			break;
+		}
+?>
+
 	<tr id="<?php echo $bulk ? 'bulk-edit' : 'inline-edit'; ?>" class="inline-edit-row inline-edit-row-<?php echo "$hclass inline-edit-$screen->post_type ";
 		echo $bulk ? "bulk-edit-row bulk-edit-row-$hclass bulk-edit-$screen->post_type" : "quick-edit-row quick-edit-row-$hclass inline-edit-$screen->post_type";
 	?>" style="display: none"><td colspan="<?php echo $col_count; ?>">