From NetFlix:

    When a malicious, land-hungry rancher (Jeremy Irons) has
    the marshal and deputy of Appaloosa killed, two gunmen
    (Viggo Mortensen and Ed Harris, who also directs) arrive
    and try to bring law and order back to the frontier town.
    But when a beautiful widow of uncertain convictions
    (Renée Zellweger) enters the picture, the stakes are
    raised and soon the lead flies. Lance Henriksen co-stars
    in this Western based on the novel by Robert B. Parker.

Second to “Law and Order” I guess I like westerns (with TRASH as a close third).

Today’s westerns don’t follow the models of the 1940s and 50s. In our list of westerns
only “Open Range” comes close to the model and even that admits of something
unheard of in older westerns, i.e. “sensitivity” (GASP! – what are these young’ns
thinking of).  “3:10” to Yuma had a great surprise ending. “Assassination of Jesse
James” was really a character study. And here “Appaloosa” features two law-men-
for-hire joined at the hip who might be divided by the new widow in town. Kathy and
I both initially jumped to the wrong conclusion.  Jeremy Irons does his usual
perfect imitation of slime.  There are good plot twists. Towards the end the film
seems to bog down in uncertainty, but it is that uncertainty that drives the film
to a very resonable conclusion.

Incidentally, Ed Harris wrote the screenplay.  I’m impressed.

Again, if you like westerns, you will love this film.