He almost became the first actor to win three Oscars when he was nominated for Cast Away. Alas, this wouldn't be accomplished until Daniel Day-Lewis won in 2013.
Unconfirmed retellings of Tom Hanks's childhood make it seem as though he had an exceptionally difficult one: both his parents remarried over and over again, there were so many step-siblings that Tom was known by a number (either "number eight" or "number ten" depending on the retelling) instead of a name, etc. — just a very unstable, cold environment. The fact that he's transcended all that to become a highly successful Hollywood icon with one of celebdom's most durable marriages? Pretty damned superheroic.