I was dragged to see Anaconda 2. We actually both walked out about 20 minutes into it, it was so ridiculous and bad. There was a sort of victorian drama thing she dragged me too. I found it incredibly boring but she loved it.
If a girl had terrible taste in movies, I don't think I'd date her. I mean, if she liked chick flicks and that were the main thing she liked... I'd see her as shallow. And if she then had the cheek to judge me based on the kickass stuff I watch, another reason to see her as shallow.
She has to have good taste in movies or it's just not going to work.