This year would be the year where the science fiction movies are so deep into fiction, you would be hard pressed to find any science in there.
The first one that comes to mind is Stealth. That movie was such a travesty to science that even Popular Science wrote an article saying what a load of crap that was. I guess it would help if there was a cute chick/great acting/decent story in the movie somewhere but there isn't. The action sucked. The acting sucked more and the plot made Swiss Cheese look solid. Jamie Foxx got lucky. His character gets killed off within the first 30 minutes of the movie. (Probably coz he's black and therefore can't be the hero.)
The second movie that makes even Stealth look good is A Sound of Thunder. I won't go into how bad this movie is. Suffice to say, I watched and felt like my IQ just went down by 50% by the end of the movie.