This is the PHP-Code for an Image-Grabber for the Geek-Hero-Comic:

function isValidURL($url)
{
    return
    preg_match('|^http(s)?://[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(/.*)?$|i',
    $url);
}
$followpage='http://www.geekherocomic.com/2008/03/04/03042008/';
while (!empty($followpage)){
    if (isValidURL($followpage)){ 
 
        $page = file_get_contents($followpage);
 
        $picapttern = '|<img src=.*?comics\/(.*?)" alt=.*?>|U';
        preg_match_all($picapttern, $page, $match);
 
        $pictures[] = $match[1][0];
 
        $nextpattern='|href="(.*?)"><img.*?next.png.*?|U'; 
        preg_match_all($nextpattern,$page,$nextmatch);
        if (empty($nextmatch[1][0])){
            $followpage="";
            echo "error:";
            print_r($nextmatch);
        }
        else {
            $followpage=$nextmatch[1][0];
        }
    }
}
foreach ($pictures as $pic){
    exec("wget http://www.geekherocomic.com/comics/". $pic);
}