Murphy (Fallout 3)

Murphy is a ghoul scientist stationed just inside Northwest Seneca Station. He has an assistant named Barrett, who acts mostly as a bodyguard.

Unmarked quest: Murphy's Bombing Run
Murphy is working on an improved version of the drug Jet, known as Ultrajet. However, he needs your help with one of the ingredients: Sugar Bombs. For every box of sugar bombs that you bring him he will pay you a 15 caps (30 if you pass a Speech check). You can then purchase Ultrajet from him.

Appearances
Murphy appears only in Fallout 3.

Bugs
(Confirmed only on the 360 version) Sometimes it will take a few seconds for the game to register that you've given Murphy any or all of your Sugar Bombs. You'll say "Here's all the Sugar Bombs I've got." but you won't receive any caps nor will they be removed from your inventory. Trying this a few times seems to get it to work.