Those who have seen all three movies say that it's not important to watch them in order considering that none of them follow the same story or include the same characters, other than Clint Eastwood. The only other similiarities would include the direction and the music. It is, however, of note that at the end of The Good, the Bad and the Ugly, the man with no name acquires the poncho that he wears in the previous two films (leading some to believe that The Good, the Bad and the Ugly is a prequel to the first two films, and is therefore first chronologically). Edit