Hitchhiker's Guide to the Galaxy
Well I love the radio series, love the book, like the tv show, and my opinion of the film is:
Really amazing version of the story, and produced perfectly, keeping true to the original ideals, whilst changing things enough so that if you loved the old series you can still love them without the film getting in the way. The special effects were spectacular, they didnt even get in the way of the neuances of the script, which was Douglas Adams (may he rest in peace) at his best.
There was even a surprise apearence by the orignal Marvin from the TV series.
I reccomend going to see this film immediately, I give it 10/10