It didn't quite have what the "originals" had. Much like the sequels to the original Star Wars trilogy, Indy 4 had unbelievable action sequences and computer generated effects, but lacked the "original" substance and feeling of the prior movies.
Harrison has some of his original charm, but he is much older now, and tired. And the lines that were written for him were out of character from the last three movies.
Still quite a show and lots of fun though. May as well go and see it in the movies for old times sakes.