The aliens were out of place. But I didn't think they ruined the film. They were only in the very end of the movie. They weren't in-your-face like "Saucer men from Mars" would of been. I would of liked something supernatual, instead of the aliens angle. Everything else we had in Indiana Jones was supernatural. And I could of lived without the CGI-fest that it was. But overall, I still liked the film, and thought it worked. Plus, it was good to see Indy back again.