good sci-fi

Anyone know of some good sci-fi I shoud read, I'm thinking of trying out a new author

First you must read at least 3 books from the "Big Three" of science fiction.

Isaac Asimov, Robert A. Heinlein and Arthur C. Clarke.

 They have already been mentioned in this thread. But, i must reinforce that you must read at least a few books from them. Because they are the masters. Without them, science fiction would not be what it is today. Start with them, you wont be dissapointed.