Use PHP to place panels anywhere in your Drupal site
Panels are a quick and easy way to create columns of information. You can easily add blocks, nodes, and views to a panel layout. One great thing about panels, is that you can easily administrate the panel from your Drupal admin pages. Here's how you can embed a panel into your theme or simply place it in a block or region:
Use panels_panels_page($did)
For example:
<?php
$did = 1;
print panels_panels_page($did);
?>
where $did is the database id of the panel. $did = 1 is the first panel.
You could stick that PHP code in your theme or you could put that in block and then place the block in the header, content, and/or footer of your sites. The possibilities are endless.

