Smith plays the role of Hancock, the one superhero that fails to realise that 'with great power comes great responsibility', and instead spends his time creating more problems than he solves.

Hancock's drunken heroics may save lives, but the chaos he leaves in his wake proves too much for the people of Los Angeles.

Until he saves the life of a PR man Ray Embrey (Jason Bateman), who then takes it upon himself to change people's perception of the superhero with his own PR campaign.

Click here to view Hancock trailer.

Hancock is a superhero film with edge. It's not about a superhero that lives a comic-book double life of perfection, but is more of a 'real-life' superhero (if, indeed, there can be such a thing).

It is hard to imagine the role of Hancock being played by anyone other than Smith, and it is his charm that really makes the audience warm to the destructive hero.

Smith doesn't play his usual character, and there are some fantastic moments within the film that have to be seen to be believed, like when he visits Ray and his wife Mary (Charlize Theron) and sees the French bully who has been picking on their son - who then gets a trip into space to learn his lesson.

You'll be expecting a twist all the way through - but the one I was expecting never came, and what did happen, I certainly hadn't spotted, and was more than a little surprised at.

Without giving away the rest of the plot, it's hard to say anything more.

Hancock isn't your typical superhero movie - nor does it pretend to be.

It is the perfect light-hearted summer film with a twist you won't see coming (unless you've read the spoiler reviews!) and a superhero you can't help but love.

All in all Hancock is a brilliant film, but the brilliance is due in the main part to Smith's portayal of the boozy hero. Without him it is unlikely the film would have been so edgy and so likeable.

But it was. It was enjoyable, and I would happily watch it again for some of the truly comical moments between Ray and Hancock, and the stunning ending sequences.

Click here for Hancock showtimes at Odeon Silverlink.