Master-V writes:  

MyShowtimes is a PHP-Nuke module that allows admins to add showtimes to their PHP-Nuke site. The showtimes are ripped from movies.yahoo.com and placed on your site. Admins can choose to display showtimes from any number of theaters. MyShowtimes is developed on PHP-Nuke 6.5 but might work on other versions.

You can view it here
Download it here
Support forum here

No registration is required, but it is greatly appreciated