Great exits usually mean something new is born, or something is earned.
-Agent Smith - The Matrix (lesser extent Revolutions)
-Almost everything in Die Hard, but the nick of time death for Hans Gruber
-Trend, but Harry Potter 7.2 when Lilly bites it, Snape and baby Harry in tears.
-Whoa, "I've been shot" Galaxy Quest.
-Blade 1, 2 villain deaths, blade through a crotch in Blade 2.