quite a few in this film, which i have to admit, is still one of my favourites, and i know that these lines are required to explain the *tech* stuff but, from *apollo 13*
"if jack can't dock this thing, we don't have a mission"
"its like flying with a dead elephant on our back"
"they won't even know which way they're heading, thats a bad way to fly"
etc etc
those *explaining to the simpletons* lines make me cringe every time