El Dorado (1966)

Starts a little slow and a little familiar, but around the time that James Caan is introduced as Mississippi, this movie starts to cook, and winds up just about as entertaining as a movie can be. It's basically an unofficial remake of Rio Bravo. It has the same director (Hawkes) and the same writer (Leigh Brackett), and John Wayne plays the same character. Robert Mitchum takes the Dean Martin role and James Caan takes the Ricky Nelson one. Less singing and that's a drawback but the characters are beautifully developed and the dialogue is sharp as spurs, and I loved the scene where they take out the bad guys in the bell-tower.