What Are Some of Your Favorite RPG Quests?

Ryosen asks: "The current issue of PC Gamer Magazine has a rundown on the MMORPGs due out this year. Reading over the list of hopefuls and checking out some of the websites and comments, I continually ran across complaints from players about the tedium in a lot of the quests from various games. These are typically of the non-imaginative 'take this message to that person' variety, or 'go kill 4 of these creatures' sorts. Obviously there have been some great quests and plots in games of the past and, with so many new RPGs in development, I thought this would be a great time to reminisce over some of our favorites. Who knows? Maybe some of those designers might find some inspiration for their upcoming creations."