What are your favorite movies about the war in Vietnam?

What are your favorite movies about the war in Vietnam?
My:
Platoon is a 1986 war film written and directed by Oliver Stone and starring Tom Berenger, Willem Dafoe and Charlie Sheen, with an early appearance of Forest Whitaker and a small supporting turn from Johnny Depp. It is the first of Stone's Vietnam War trilogy, followed by 1989's Born on the Fourth of July and 1993's Heaven & Earth.
The story is drawn from Stone's experiences as a U.S. infantryman in Vietnam and was written by him upon his return as a counter to the vision of the war portrayed in John Wayne's The Green Berets.[1] The film won the Academy Award for Best Picture of 1986. In 2007, the American Film Institute placed Platoon at #86 in their "100 Years...100 Movies" poll. British television channel Channel 4 voted Platoon as the 6th greatest war film ever made, behind Full Metal Jacket and ahead of A Bridge Too Far.