My wife thinks I made her look like an idiot [View All]

Apparently some months ago, we were talking with someone about movies we'd seen in 2007 that we liked. One of the movies she mentioned was "Across the Universe" and I then said that I actually ended up thinking it wasn't that great. Right after the movie, I probably said I enjoyed it, but later, after thinking about the movie, I decided it was heavy handed and unsubtle and it just wasn't my kind of film. Since we never ended up talking about the movie again until the above conversation, I never told her that I changed my mind on the movie.

Now, months later, she's bringing this incident up and saying that I made her look like an idiot because she said we both liked the movie and I just happened to have changed my mind about the movie and didn't tell her about it. It's a movie. So what if I changed my mind on it? I don't think that counts as making her look like an idiot.

She says she looks like an idiot if she says something that is incorrect. I think she's really blowing this all out of proportion but can't reason with her on this. What do I do?