Our friends at the A.V. Club have posted another Gateways to Geekery, this time on Orson Scott Card.  They obviously recommend Ender's Game first.  They do mention that he is a bit of a controversial figure, but they mention that if you set that aside, his work stands up pretty well.  Perhaps it will hurt my cred, but I haven't actually read anything by him yet.  I guess it should go on my list, hmm?