Die Hard with a Vengeance
Slightly over-long and with an almost entirely unnecessary coda (leading to a series-worst climax), but pound-for-pound, this might be the most non-stop entertaining of all the Die Hard movies. John McClane is a great character but Willis and Jackson have a phenomenal chemistry together and their interplay elevates the bonkers action.
Also how great is it to see actual, on-the-streets, non-CGI New York in a film like this?