Well, they're mostly subtle, small language goofs, for one, this:
...plays a prominent role in the films finale...
It's called Das Boot :rotfl:
Another one is during a scene in a... submarine.
From the goofs at the Beerfest page at
www.imdb.com: Jürgen Prochnow makes a comment about how he "had a bad experience in one of these before" when in the submarine. This obviously refers to
Boot, Das (1981).