In 1965, Neil Simon wrote the Broadway smash "The Odd Couple" with Matthau in mind. The following year, Matthau co-starred with Jack Lemmon in The Fortune Cookie and nabbed the Best Supporting Actor Oscar. Among the popular duo's nine screen teamings were the equally successful film version of The Odd Couple and its sequel 30 years later.
Matthau was nominated again for Kotch and The Sunshine Boys (1975). His final appearance was in Hanging Up in 2000. He died July 1, 2000.