Also, now that we are well into season 3 (almost done, in fact), I have started reading the Television Without Pity recaps of the show. In the episode that starts with a flashback of Tortuga bragging in the bar about how awesome he is, a guy comes in to give him a belated birthday present. According to the recapper, who got this from a Breaking Bad podcast, Vince Gilligan named the guy Juan Bolsa, which roughly translates from Spanish into "Johnny Sack".
It's little touches like that that make me love the show.