I haven't posted a movie review on this blog before, but I think the movie The Hitchhiker's Guide to the Galaxy is probably of interest to many readers of this blog. I also apologize to any international readers in places where this movie has not been released yet (although, as you'll see, you're not missing much).
I like the five books in the trilogy a lot and I really wanted to like this movie. Unfortunately, the movie is incredibly tedious; not awful or stupid or shockingly bad, like when a movie totally ruins a book, but just very very boring. Stuff which seemed clever and interesting and psudo-scientific in the book(s) repeatedly fell flat in the movie. It was like watching a standup comedian where every time he said the punch line to a joke and paused for laughter, there was none because it wasn't funny. I didn't hate the movie, I certainly didn't love it, I was just bored and wished I'd spent my afternoon doing something else.
For huge fans of the book, go ahead and see it anyway (if you haven't already) just to satisfy your curiosity. But go in with lowered expectations; they still won't be met. Think of it as a friend telling you about the book rather than you reading the book yourself. Remember Dune? Yeah, like that.
To be fair, there were a handful of people in my theater who laughed out loud at key parts and really seemed to be enjoying themselves; I believe they would've liked anything. For the rest of us, don't go see the movie unless you have nothing else to do--or, alas, go with some friends to make fun of it MST3K-style, which is hardly a compliment.
Ah well, like many good books, maybe the Hitchhiker's Guide series should just remain books.