Comparing and contrasting the themes in "Little Shop of Horrors" to other films

In the 1960 film "Little Shop of Horrors", the main character, Seymour acquires a strange plant, which, we find out later, talks, lives off blood and eats people. The main idea of this film is when you try to please everyone without regard to yourself you end up loosing yourself. The other characters in the story revolve around Seymour and this bizarre plant. He names the plant after his crush Audrey, who is an assistant in …

…a hypochondriac and no father to speak of. His employer is greedy and only wants him around for his plant that brings in visitors to his shop. Seymour himself has great ideas and wants to achieve his dreams and will do anything to gain them, even kill it would seem. If you want something so much you will do anything for it, you will end up loosing yourself and even the ones you care for.