I think Alex Garland should give his book another go as a film
I admire Danny Boyle's film and Leo is good although miscast in this. But seen as the author of the book is now a pretty damn good director himself, I think he could give this book a more deserving film adaption.
The character Leo play's Richard in the book is a lot more of loser and doesn't get with French girl at all, also he's English. The book has a great character of a ex Vietnam vet who was totally cut from the film. It's a lot weirder and strange and violent too. I do think this book can make a awesome film, I just think with Boyle's version with Leo coming off Titanic and studio's been involved it clear to see it got gutted. Shame really.