The Hitchhiker's Guide to the Galaxy by Douglas Adams is another book that I've had on my reading list for a long time. If I had know it was as short as it was, or as funny, I might have read it a little sooner. They made a movie a little while ago, but I didn't see it and I got the impression it wasn't well received, but I'm not sure.
The book has that British humor twang to it, that is so funny, but somehow not really identifiable, unless its the sarcasm. The Brits do sarcasm better than anyone. The storyline is big, and it jumps in pretty quickly. The galaxy is filled with inhabited planets and a great way to get around is by hitchhiking. Its not easy, so there is a fair amount of street cred that comes with it. But once you get out there, its not too long before you find that many of the same problems that we have to deal with on earth, are also problems just about everywhere you go.
That's what sets this book apart I think, and some of the other sci fi stories like it, its written in opposition to the two main trends in sci fi: utopian futures and dystopian futures. There aren't a whole lot of sci fi stories that predict a future that's pretty much just like the day-to-day crap we deal with now. But if the expanses of the galaxy are the same where ever you go, why would anyone travel? The answer is simple: the more things stay the same, the more they change. Each of their adventures is wild, screwy, unpredictable, and funny. And the funny, often verges on the ridiculous. Like a lot of British humor.
Read this book. Its funny and relevant now, just as when it was first written.
Then read it again in 20 years.