Doodles, ala Google, for a php powered site (works for WordPress too).

doodles.php

<?php
//
// Autogenerate doodles (ala Google) for specific dates.
// Following is an example. Repeat from line 10 to line 18
// in the code below for other events, and update event
// details, and image for the event.
// 2008 ckunte
//
$today = getdate();
/* Christmas -- Example of a picture message */
  if($today['mon'] == 12 && $today['mday'] == 25) {
     echo '<img title="Merry Christmas to you." alt="Ho. Ho. Ho"
      src="http://yoursite.com/pictures/xmas.jpg" />';
    }
/* New Year -- Example of a text message */
  if($today['mon'] == 1 && $today['mday'] == 1) {
     echo '<p>Happy New Year!</p>';
    }
?>