One thing that has become very common in games now is the idea of having different endings depending on the player's actions in the game. The earliest game like this I can think of is actually the first Phantasy Star, though Phantasy Star III is a better example. Of course, Chrono Trigger is probably responsible for really making the trend popular, though most games don't go to the extreme of having over ten different endings.
Do you like for games to have more than one possible ending? When you play one of these games, do you always try to get all of the endings?