I know everyone says the weed ones are annoying, but they are. Most of the people who have them are annoying little fucks, and don't know when to keep their mouth shut. And the ones with the cars, the cricket bats, the half-naked women, they all suck.
Personally, I use the "Mad Man" title with the bloody hand emblem, and I just feel it suits me. The flags are pretty good too, but I like the flags with the words across them just as well, like the "Great White North" title, being a Canadian myself.
And why the hell would they even make the titles to appear to the 12-year-olds in an M rated game?