1. A display controller comprising: an extraction means for extracting a characteristic of at least one of image data and sound data of a content stream; a detection means for detecting a predetermined scene of the content stream on the basis of the characteristic extracted by the extraction means; a reproduction means for reproducing the content stream; and a display control means for displaying an image of the predetermined scene of the content stream so as to be recognized as a two-dimensional image and displaying an image outside of the predetermined scene of the content stream so as to be recognized as a three-dimensional image.