It's only been done once seriously in our group; when we were playing Farscape D20, our resident cannibal chef, Yain (a Scientist who added Pirate levels later), had a pulse pistol that he was inordinately lucky with. So he started saving up his Control Points so that he could spend them on increasing his to-hit rolls for important shots, thereby officially making it his "lucky pistol."
At some point we ran across his cousin, who was a genuinely horrible cook but had a terrific sense of showmanship, doing big showy flambe' moves on stage in a kind of Iron-Chef-meets-Las-Vegas style. After that meeting, Yain dubbed his lucky pistol "Fygaro" in his cousin's honor. It was in the same line of work, after all: taking objects made out of meat and rapidly burning them into a black, inedible lump in a very crowd-pleasing way.
In the pickup hack-and-slash game we used to play occasionally, we had a half-elf wizard who was fond of introducing enemies to his pair of wands of magic missile. He'd brandish them two fisted, saying "I'd like you to meet my wands. The first one is named 'Bling.' <zap!> And the other one is also named 'Bling.' <zap!>"
Of course, he also had "Mograth's wand," which was a third magic missile wand that would yell insults at whoever it just hit in a crotchety wizard voice. That was part of the loot we recovered from the former home of Mograth (the wise), along with his old tunic. The tunic was interesting because it had, embroidered on it in big letters with silver thread, the words:
"MOGRATH
(the wise)"
Mograth was apparently a minor wheel in some country's army at some point, and was more than a little egomaniacal. He made a great wand, though.
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and we hung on to his tunic so we could show it to people in bars
ryan