Constantine

Directed by: Francis Lawrence
Produced by: Gilbert Adler and Michael Aguilar
Written by: Jamie Delano & Garth Ennis (comic), Kevin Brodbin (screenplay), Kevin Brodbin & Frank Cappello (screenplay)

Starring:
Keanu Reeves (John Constantine), Rachel Weisz (Angela Dodson / Isabel Dodson), Tilda Swinton (Gabriel), Gavin Rossdale (Balthazar), Djimon Hounsou (Papa Midnite), Shia LaBeouf (Chaz Kramer), Pruitt Taylor Vince (Father Hennessy), and Peter Stormare (Lucifer)

Music by: Klaus Badelt and Brian Tyler
Distributed by: Warner Bros.
Released: February 18, 2005
Running time: 121 min.

Summary taken from this site:
The film opens in a ruin in Mexico, where a young man finds the Spear of Destiny wrapped in a Nazi flag. He seizes the spear and becomes possessed, heading for Los Angeles.

In Los Angeles we see John Constantine perform an exorcism on a young female teenager; although he is successful he is unnerved by the boldness of the demon, who attempted to leave the girl's body to cross over into humankind's realm. After meeting a detective named Angela Dodson, who wants to know if her twin sister committed suicide, he uncovers a plot by Mammon, the son of Satan, to overthrow his father and reign over both Hell and Earth.

There are many worlds, according to Constantine, of which Earth is only one; it is a neutral place between Heaven and Hell, which have wagered on which can win the most souls among humans. Some humans are able to see the demons and angels who walk among them. Having lived with this ability since birth, Constantine was institutionalized as an adolescent and eventually committed suicide to escape the torment of seeing them but not being believed. Though resuscitated by doctors, he was officially dead for two minutes, which he spent in hell. Unfortunately for the young Constantine, time moves at glacial speed in the underworld: "Believe me, two minutes in hell is a lifetime." He has spent the rest of his life trying to win back God's favor by battling the forces of Hell, though his time on earth will be brief; Constantine has smoked 30 cigarettes a day since he was 15, and is now dying of lung cancer.

After incapacitating a room full of demons, Constantine moves on to stop Mammon from being born from Angela. With a taxidriver, Chas Chandler(Shia LaBeouf)'s help, Mammon is supposedly subdued, but soon after Chas is killed by Gabriel the angel after bragging about his talents.

Constantine eventually takes his own life a second time in order to win an audience with Satan, whom he informs of Mammon's plot in exchange for the release of Angela's sister from Hell. Heaven consequently accepts Constantine for his selflessness, and Satan, enraged at having lost Constantine's soul, revives him and removes the cancer from his lungs so that he can live on and prove whether he truly belongs in Heaven or Hell, having been forgiven for his twin-suicides. His fate now belongs to him, and in the end he is seen chewing gum, as opposed to smoking.

At the end of the film's credits you see Constantine visit Chas' grave saying he did a good job. When Constantine is about to leave the graveyard, Chas appears as an angel and is dressed as Gabriel was previously, implying that he is Gabriel's replacement.