1. The Character of Wilhuff Tarkin died in the very first Starwars movie made. He was first seen in the very last Starwars movie made. Unless I'm mistaken (which i doubt), he is the only character in the whole movie-series (prequels + original) who had that dubious "honour".
[If you have a fun fact or trivial detail about starwars (movies, eu, etc), don't hesitate to put it here]