In no particular order, I'd probably pick Terminator 2, Die Hard, Robocop, The Dark Knight, Heat, Kill Bill 1+2, District 9, The Crow (been awhile since I've seen it though), Speed, and maybe John Wick.
There's probably quite a few I've missed out on, especially foreign action films.
What are your picks, either popular or obscure?
I came in here to find The Raid because it's so goddamn good, probably my favourite action movie, but as Hallway Scenes go, isn't Oldboy earlier?