Be Kind Rewind has a theme of cheap-and-cheerful pastiches of existing iconic movies, hence the grade-school-style painted background. What’s unfortunate is the middle-school-style perspective distorts and remedial head transplants in the photomontage in the foreground.
It’s neither bad-enough-to-look-deliberate, nor good-enough-to-not-appear-on-photoshopdisasters. Bigger version here.
Edit: Belated thanks to Señorita Puri, mea culpa!