By far the best Leone film I've seen so far. Westerns aren't for me, Leone's film in particular have always rubbed me the wrong way. They are crazy long, slow and way too serious. A Fistful of Dynamite isn't a complete turnaround, but there's a much bigger focus on action and the mood is noticeably lighter.
Juan is the leader of a criminal gang, their goal is to rob a big bank. They run into John, a bomb expert who is on the run from the Brits. Juan can convince John to join their band of criminals, but John is more interested in supporting the Mexican revolutionists, who could make excellent use of John's skills.
The Morricone soundtrack is extremely cheesy, and the 150-minute runtime is a bit silly, but there are some large-scale action scenes that are quite fun. The characters don't take themselves too serious either (certainly not Juan), which makes it a lot easier to enjoy the boorish action scenes. If only there hadn't been so much horrible filler, this could've been something.