I read this book in the sixth grade, and try to reread it every year. It predicted some of the major ideas in modern computing and is just a fun read. It's also nice and short, you can easily put it down in the flight from NY to SF.
I was blown away by how cool, atmospheric and gripping this is. Especially when you remember when it was written. It defined many ideas of modern sci fi. Cons: Gibson can be a bit difficult to read and requires concentration; he often introduces unfamiliar concepts and doesn't explain them until later.