contact_personal_form in modules/contact/contact.pages.inc
Form constructor for the personal contact form.
contact_site_form in modules/contact/contact.pages.inc
Form constructor for the site-wide contact form.
cron.php in ./cron.php
Handles incoming requests to fire off regularly-scheduled tasks (cron jobs).
file_download in includes/file.inc
Menu handler for private file transfers.
system_batch_page in modules/system/system.admin.inc
Default page callback for batches.