As soon as I finish Gene Wolfe's Books of the New Sun (which is turning into more of a slog than I'd hoped, although not quite as bad as the similarly themed Tales of The Dying Earth by Jack Vance - fantasy masterwork my @rse) I plan to read Ender's Game ahead of the film coming out this / next year. Read Seventh Son years ago, and remember it being pretty good, but never really got into the series.
For anyone after a sci-fi recommendation, Alistair Reynolds' Century Rain is a good read (albeit a bit of a departure from his previous stuff), and Broken Angels by Richard Morgan is just fantastic, even better than it's predecessor.