In many scenes like this one, set in a Chinese laundry, the camera lingers over an almost dizzying amount of visual detail.
Did Leone really have Jack Elam blow a fly off his face for an entire minute and a half? I think I read Elam poked his eye out with a pencil when he was kid, but I might be wrong about that.
The dubbing of actors' voices is jarring (like in A Fistful of Dollars etc., many of the Italian actors are dubbed here). Or maybe it was just odd. Odd like dressing up a bunch of Italians to look like Irish homesteaders and filming them in the Spanish desert.
I went out and got this one only to see Henry Fonda as a complete badass, and sure enough he's a real soulless piece of beef jerky. An interesting one, but moves at a glacial pace.