They Live had the greatest, longest, kickass fight scene of all times.
A great topic for another thread. Also, car chases, and gunfights. Feel free to start the article.
I'll start with "Fast & Furious" franchise for car chases. It's probably the standard now of car action.
For gunfights I will contribute "Tombstone" and "Open Range". I tend to go more realistic than many with a large shootouts where only the good guys hit the bad guys, even if out gunned. Think "Open Range" is probably my favorite and looks most realistic. But then, "Lone Survivor" was very realistic.