One of the most famous is Firefox (*).
These fictionnal aircraft are not real aircraft used to represent a new plane (like the Phoenix III which is a biplace played by a F-117) but crafts with new lines and built from scratch (digital, mock up or really 'flyable' -as the sad Phoenix in which Paul Mantz lost his life-)

Well... but could a category built up to group them ?

(*) BTW,
the page about this movie already exists but has no image !
And the CH-53 and civil airliners are missing...

At the moment, fictional aircraft are just titled "(Aircraft Name)", the speech marks highlighting the fictitious nature, along with a comment. A category is something we can look at, and I will add to my list for this summer.

As the page has had no activity since 2010, feel free to go and complete it yourself - although you might want to double check with the original author first.

I loved that movie and even though I wasn't the original poster, I was the last to touch it. At this point, if you can add to the page, please feel free to do so. We would love any help you can provide.

Thanks!