The general idea of a Parasite-demon-alien thing with a sense of humour invading a rough-around-the-edges guy SOUNDS appealing and has an opportunity to. However, that charm is very quickly lost when two potentially witty (and dare I say charming?) characters are bogged down in a script that doesn't fit and focuses on the wrong part.

10 stars for venom, Eddie, and their general chemistry. -6 for the plot.

There, I said it.