Having seen the orginal indiana jones triolgy, i believe this one was far differant.It had a much deeper story line, and it took place in multiple countries. And the ending with the Aliens is somthing we have never seen anything like in in an 'Indy' film. However it maave had a strange ending, but i think this was the best one yet, most film series tend to have on an 'epic' ending i the final film, but i think you could class that as 'epic'.
This could be the final 'Indy' film for harrison ford as he gets married to marion at the end, hopefully not though. He's getting older but im pretty sure theres enough left in him for one more film.