If you have pages on your site without any internal link to them (I mean pages reachable by Google Bot when he visits your site), they won't rank well, and your site won't be ranking well too.
That's because your pages will only be visible to Google through the sitemap. The Google Bot will think "Hey these pages are not accessible to the user through the site links? I should not rank them then."
You will penalize your whole domain too because you will be losing additional pages in the site. Especially if those pages have good content (I suppose this the case anyway).
BUT, given your example, Google Bot should be able to access them with you strange link. Question is, what is the anchor text ? Is the anchor a generic text or a good keyword for each page? If you have bad anchor text, I would make a specific section on the site which allows the user and GBot to access theses pages with good anchor text.
Maybe a HTML sitemap, as you may see one on rotten tomatoes :
http://www.rottentomatoes.com/sitemap/movies