Is it possible and has anyone ever been to the island where The Beach was filmed?
The Beach !
Paul,
Yes, you can visit the location of 'The Beach'. Most of the movie was filmed on Koh Phi Phi Le. There is regular boat service from Krabi and Phuket to Koh Phi Phi. Once on Phi Phi, you can take a day trip to Koh Phi Phi Le. Great snorkelling and swimming. No overnight stays allow on Phi Phi Le.
Hi Paul
I would recommend staying on Phi Phi Don, the neighbouring island, where there is lots of accomodation. You can get a boat from Phi Phi Don directly to Phi Phi Le. I went there on a snorkelling trip, which I would recommend highly.
Phi Pi Don is worth staying on for a few days - amazing beaches!
Yep! its true, tho its not exactly the same as it is in the film (its not a fully closed off lagoon) Its called maya bay i think? And yes go to phi phi don then get a boat over! I think thats what you do anyway, il be finding out in 2 weeks when i go myself 
You can choose the Beihai Silver Beach, Guangxi, in south China. Here you can experience the romantic experience in the films. 
Beware, you may have a wrong imagination of Phi Phi given by the movie. It was once - more than twenty years ago a beautiful island, the most beautiful I've ever seen - but much of the charme is gone. Phi Phi Don of nowadays is very touristique. And the negative sides of tourisme are almost nowhere in Thailand as obvious as here. Anyway if you plan a Thailand tour, at least a day trip from Phuket or Krabi is worthwile.
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[ Edit: No promos allowed. ]
You now get charged to go on the "beach" was something like 200 baht! Can't believe how many tourist boats you had around this area, it made snorkelling very difficult, lots of waves from the boats & because there were too many people & boats, I think that scared the fish off. It's best to charter your own longtail boat early in the morning or late in the afternoon to avoid the big tourist boats. Absolutley stunning though, one of my fave places in the world!
It is stunning around Phi Phi Lee, but has Laura mentioned it is overcrowded and gets really busy with speed boats, which makes snorkelling difficult and dangerous. One of the best beaches we stopped off at near phi phi was bamboo island, unbelievable turquise seas and powder soft sandy beach. I think you can camp there too.
I'm sure things have busied up again a bit now, but it was really quite at both Phi Phi Don and Phi Phi Leh when I went (four months after the tsunami). It's actually a very beautiful place and worth going to support the community there as well after all they've been through. There are a couple of pics in my gallery if you want to see it!
I went in June this year and the main village area is still being rebuilt. It was one of the wort hit areas, but well on its way to recovery. You can stay on the beach but if you're strapped for time I recommend a speedboat tour... they're hella cheap and less noisy than the longtail boats... with lunch and snorkelling included.
...Phi Phi Lei was one of the most beautiful places i've ever visited. I'll definately go back next time i'm in Thailand.