Collins says that if she had to go into the Hunger Games, her strategy would be "hiding" (source). We guess she doesn't get to be Mockingjay, then.
Collins has also written another dark series about warfare, the Underland Chronicles. Just in case you can't get enough Collins now that the trilogy's done.
Collins was one of the 100 Most Influential People for 2010, according to Time magazine (source).
The Hunger Games has two mythic/historic sources: the myth of Theseus and the minotaur, an Spartacus, a Roman gladiators who ended up leading a rebellion against Rome (source).