I was thinking that video games have to be the way to go, seeing as I can't think of any visually good films to write about that I know well.
Possibly Final Fantasy 8, one of my favourite games. It's faiurly cinematic for a game and feels more like an interactive movie than a video game because of its nicely rendered characters, immersive movie sequences and impressive world design.
The only snag I can see is in research, aside from looking at reviews for the game and looking at pictures there's little analysis that I can make and back up with quotes...
Short of looking at films like Avatar I can think of nothing in particular