SAN JUAN, Puerto Rico - Benicio Del Toro didn't wait long to collect on a favor that Oliver Stone owed him for working extra hours on the set of his most recent movie, "Savages," released this year.

The favor? A trip to Del Toro's native Puerto Rico, which Stone hadn't visited since the early 1960s.

"I told him, you owe me one," Del Toro said with a smile as he recalled the conversation during a news conference Friday in the U.S. territory, where he and Stone are helping raise money for one of the island's largest art museums.

Both men praised each other's work, saying they would like to work with each other again.

Both Del Toro and Stone are expected to remain in Puerto Rico through the weekend to raise money for the Art Museum of Puerto Rico, which is hosting its annual movie festival and will honor Stone's movies.