Just finished The Fourth Bear by Jasper Fforde. His books are wonderfully entertaining - his take on aliens is remarkably original - and incorporate all manner of fictional figures.
I absolutely love his books, I think the way he writes is so smart and hilarious, I love everything that he's done so far (my favorite being the Eyre Affair).
As for the Ender's Game series, after reading the first one I read Ender's Shadow (which isn't really a sequel, it's more like a parallel to Ender's Game, just with the focus on a different character), and then I read Speaker for the Dead, which is a sequel to Ender's Game. I really liked the sequel because it's set in the future, so Ender is an adult now, and he basically just flies around the galaxy, never aging, and going to speak at important people's funerals. I really liked it, I think Orson Scott Card is so creative, but I never read past that sequel. Oh well.
Currently, I'm reading Midnight's Children by Salman Rushdie, and whatever else I have to read for class. After I finish that I'm either going to read The Road or the Book of Daniel (for anyone who likes historically based fiction, you should check out E.L. Doctorow's stuff, he has a really good book called The March that's about the Civil War).