The deranged Dr. Caligari and his faithful sleepwalking Cesare are connected to a series of murders in a German mountain village, Holstenwall. Caligari presents an example of a motion picture "frame story" in which most of the plot is presented as a "flashback", as told by Francis.
German Expressionism is still one of the coolest movements in cinema ever. The lighting, the funky set design and the exaggerated physical acting and facial expressions make The Cabinet of Dr. Caligari and other seminal Expressionistic films of the era a joy to watch. This film appealed to me on a visceral level more than Nosferatu did. The cool visual style makes the film very easy to get into.
Has a very cool expressionist look to it, and it's creepy, which I like. But it doesn't really grab me too much.
Effective, strange, highly influential silent film. You can still see echoes of its look and feel in movies as recent as Tim Burton's _Batman_