So after reading Ender's Game I decided to follow on with Speaker for the Dead and I thoroughly enjoyed it.
3000 years have passed since the last book. In this book Ender is a lot older (35) and has travelled around the galaxy speaking for people and what not.
We meet a new race nicknamed 'piggies' who are being studied by the humans on some random little planet.
The only annoying things about this book are all the new fucking words. I'm pretty sure he just smashed his face on a keyboard whenever he felt like making a new word or name.
All in all, I recommend this book and I'll definitely be reading the third one.