Personally my Favorite quest has to be http://fallout.wikia.com/wiki/You_Gotta_Shoot_%27Em_in_the_Head

SPOILERS

Something about doing the quest in many different ways really stuck me as... awesome. I remember you didn't have to kill the people marked and you could try to lie about it. And when all was said and done you could just take your reward and live happily or go after the prestigious T-51B, and even then that was up to you.

END SPOILERS

What do you guys think? Should there be more quests like this in the future?

Be sure to talk about all of your favorite quests from all Fallout Games here.

FO3: I enjoyed "You Gotta Shoot Em in The Head," Blood Ties, Head Of State, Strictly Business, and BEST OF ALL: The Replicated Man...
FO:New Vegas: All of your Companion's quests, Put A Spell On You, That Lucky Old Sun, and Three-Card Bounty