Directed by: Steven Spielberg
Starring: Harrison Ford, Sean Connery, John Rhys-Davies, Denholm Elliott, River Phoenix, Alison Doody, Julian Glover
Continuity mistake: When Sallah rides up to the tank to rescue Henry we see Indy toss the whip over the side of the tank, but after the tank falls over the cliff, when Indy climbs back up then walks over to stand between Henry and Sallah the whip is coiled and back in its place, hanging from his belt. Even Indy can't do that. (01:36:00 - 01:37:40)
[Over the deafening noise of ship engines.]
Indiana Jones: Are you crazy? Don't go between them!
Dr. Elsa Schneider: Go between them? Are you crazy?
Trivia: When Indy asks his father how he knew Elsa was a Nazi, Henry replies, "She talks in her sleep." Sean Connery ad-libbed this line. The cast and crew burst out laughing, which resulted in the scene being re-shot. The ad-libbed line remained in the film.
Question: Are Indiana Jones and his father immortal at the end of the movie or does the grail's power become null and void when it crosses the seal? The knight said something like "The grail cannot cross the seal, that is the price of immortality." That makes it sound like they are not immortal at the end but I still want to check.
Chosen answer: They're not, no. An individual doesn't become immortal after one drink - it requires them to drink regularly in order to remain alive. So neither Jones has been rendered immortal, merely healed of any wounds that they might have. But your surmise is basically correct - as the Grail cannot leave the shrine, any individual wishing to use it to prolong their life must stay there if they wish to enjoy its effects.
Tailkinker ★
Also, in Indiana Jones and the Kingdom of Crystal Skull, Henry Jones, Sr has passed away before the start of the story and therefore was not immortal.
raywest ★