Cabinet of Dr. Caligari - Of the few silent movies from this era that I've seen, I like this one overall the best. All of the issues I usually have with this type of filmmaking just adds to the surrealness of it. The set design in particular is unique and interesting. It all has a nightmare quality to it, which since it is supposed to be just that, helps it a lot.
I got a cheapo disk from a booth at Comic Con, I am sure I would be able to tell better what was going on in the restored BluRay. But I still enjoyed it.