Display Post list from single tag

Problem:
I want to be able to display a list of posts on a title-page on my site which are relevant to that title.

Explanation:
I’m starting a website which will primarily doing reviews, and guides for Video Games, Movies and TV. Each new title (e.g. Modern Warfare 3) has its own page. Everytime there’s some news about this title we write a post which goes into the main loop. So I want to display these posts of the title’s page on our site. Keep in mind once the site launches we’ll be creating literally hundreds of new pages per year for each new title we’re following. So creating a new page template every time may not be practical. What I’d really like is just some code I can throw into a table on my title-pages which would pull the most recent 4-5 posts with the title’s name tagged. Something quick, simple, and easy to edit on the page.

Request:
If it is possible to display a short list of posts with a certain tag without editing the page templates, or rather with just some simple code input onto the page, pls let me know how. If this is just a pipe dream, please tell me so and point me in the right direction closest to what I’m wanting to do.

-Thanks,
Allan.