Jackson is an unashamed fan of the films and clearly enjoyed the prequels enough to still be involved - don't judge everyone by your own shallow standards, georgec. I remember seeing Jackson make his plea to be in episode one way back when he was on TFI Friday; he was giddy as a schoolboy. It doesn't matter so much that it would be hard to justify Made Windu being in the movie but, as Tyrphanax says, it's great to see an actor with passion for what he's done, enough to want to come back for more.