Between the lush climes of New Zealand, the presumably hefty paychecks, and the chance see themselves ride an alien-dragon a few more times, it was a no-brainer that Zoe Saldana and Sam Worthington would go ahead and reprise their starring roles for Avatars 2, 3, and 4. Even just the paycheck part would be reason enough, because boy, did the first Avatar make an obscene amount of money.