[dirtyaura]

Capricorn One doesn't have that twist, but it's about a fake Mars mission. I saw it when I was a kid and for some reason it made a big impact on me. (Reminder for myself: watch it again to see if it's any good).

http://www.imdb.com/title/tt0077294/

[parenthesis]

Having also really liked it when younger, I watched it again relatively recently, and I thought it was terrible!

Stuff (music, art, films, books, whatever) that isn't very good can yet have a major impact on a person (usually a young person) if it presents, however badly, some idea they find compelling, but haven't seen portrayed before, so have nothing to compare the particular execution with.