I was googling action movies and came across this article which inspired my list. A couple of rules:
-Only one film from a series
-The movie had to be mainly an "Action" movie first, which excludes some great sci-fi and fantasy like Star Wars or LotR. It's a personal judgement call on some (eg "Aliens" made the list). Loose guideline: it had to feature humans as the protagonists.
Listed in alphabetical order.
May add (and remove) entries as I see new films or revisit older ones.