In Indiana Jones and the Kingdom of the Crystal Skull, I thought it was insinuated that Dr. Jones, Sr., Indiana's father, had died.
If so, how is that possible? At the end of Last Crusade, we see Jr. give his dying father a drink from the cup of Christ which, in my mind, imparts upon him immortality. Obviously, I don't believe that the Grail was meant to protect the drinker from "unnatural" death (ie. being hit by a car or dying in a plane crash), but barring those situations, shouldn't Henry Jones, Sr. have been alive and kicking?
I could be completely wrong. I've honestly seen Kingdom of the Crystal Skull, like, maybe 1 1/2 times and I could have totally made up the part about Sr. being dead, but I really think there is a passing comment or some kind of insinuation (maybe even just camera work) that Senior is dead.