The psycho bomb maker from Die Hard With A Vengeance (1995) was the attorney from Trains, Planes and Automobiles (1987).

My wife had never seen Die Hard 3 so we watched it tonight and I looked up the credits for the actor Nick Wyman who played this super shady and scary character named Targo. Lo and behold behold I knew this guy well from Planes, Trains and Automobiles.