This tattoo is located on my right wrist and is the logo seen on the new hit television series 'Heroes'. It has 3 meanings: 1 - it's half of a DNA double helix done in tribal styling. 2 & 3 - it means 'Godsend' and 'Special Ability' according to the tv shows script.
The artist was Jacek Minkowski of Avalon Tattoo in San Diego, CA. My wife has the same tattoo on her right wrist. We think of it as half of a DNA double helix. I have one half and she has the other.
Thats a fantastic way to view it. I'm sure its a very (hydrogen) bonding experience. ^_^
Oh, and mine has nothing to do with Jack... Its essentially just the tree image, a tree is a representation for something in particular for a few of my friends.