Armageddon. Apparently not having seen it was a huge hole in my cultural knowledge and a lack that I would forever feel until rectified.
Doubtless Wowbagger & barakta are the only other forumites who haven't seen it, so any review is superfluous.
When it came out, in 1998, I was busy producing No2Daughter. All the actors look the same now as they did then- No2Daughter does not, and neither do I.
aside: I didn't believe that the Aerosmith song was written for the movie but Wikipedia tells me it was nominated for best original song, so I was clearly wrong. It won't be the last time.