Actor Matt Damon and singer Wyclef Jean visited Haiti in the Caribbean, which was badly hit by this summer's huge storms.
The island was struck by four storms in three weeks, which battered the country with strong winds and torrential rains.
More than a million people have been left homeless.
The superstars visited people affected by the floods and helped give out food.
Wyclef Jean is from the island, and the pair are trying to raise more than £50 million to help people there.