You should be able to make use of the is_page() conditional, here is a link to the codex page: http://codex.wordpress.org/Function_Reference/is_page
Look at something along the lines of:
<?php
if (is_page(array(42,'about-me','Contact')))
{
include (TEMPLATEPATH . "/bottom.php");
}
endif;
?>
So, when the page displayed is either post ID 42, or post_name “about-me”, or post_title “Contact” the bottom.php file will be included.
You can also use ‘!is_page()’ to not include bottom.php as well.