"Revolution is war. Of all the wars known in history it is the only lawful, rightful, just, and truly great war... In Russia this war has been declared and begun". Lenin said that in 1905, and the quotation appears on the screen as soon as you begin watching this film. It gives you an excellent idea of what "Battleship Potemkin" is about, that is Soviet propaganda.
All the same, this film is a classic that should be watched, in order to understand why it is considered as such. In my opinion, the reasons are many:
a) To start with, the story of a naval mutiny sparked by rotten food is an interesting one, and it is told in a way that makes the spectator think that that event is happening right before him, even though the film is in black and white, and has no sound.
b) Secondly, the sequences regarding the Odessa massacre are impossible to forget, and some scenes are simply gems of great emotional impact and a profound shocking value.
c) Finally, and from a technical point of view, the ability of Sergei M. Eisenstein to produce such a film in 1925 is something noteworthy, as is his edition technic, and the way in which he uses symbols to impress upon the spectator what he wants to say.
All in all, I think that even though watching this film isn't likely to be something you will do often for fun, it is something you should do at least once. Recommended!