From the very first idea to the final product, the film Open Range (2003) is documented here. Kevin Costner narrates this documentary and talks about the casting, rehearsals, pre-production and his various health problems during the shoot.
Reviews
Maidgethma
Wonderfully offbeat film!
Diagonaldi
Very well executed
GamerTab
That was an excellent one.
Sienna-Rose Mclaughlin
The movie really just wants to entertain people.