Haven't seen Ghosts of Mars, but Vampires is ok, not quite as goofy/good as something like They Live, but pretty goofy tongue in cheek horror nonetheless. Prince of Darkness is pretty good too, but it was before In the Mouth of Madness.
Ghost of Mars? lol; jason statham is in that. Horrible movie. Like, take all the worst things from Pitch Black, and make them into a movie.
Blah, Ghost of Mars is a western, just like Vampires. Yes i know it sound stupid but it's for real, and the ending of both movies is awesome. That is another thing i love about Carpenter, the man really understand how to ending a movie