For my typography geeks, PC World magazine recently reviewed a new font by designer Daniel Gauthier called "Tattoo Lettering," which can be downloaded for free here (for personal use). Here's what they said:
Tattoo Lettering captures the inventive stylings of the legendary Sailor Jerry (aka Norman Collins), the father of modern tattoo culture and mentor of artists Ed Hardy and Mike Malone.[...]The line work is true to form with thicks and thins, but no in-betweens. The serifs are single weight flourishes, slightly nervous in appearance; the stems narrow at the foot giving the characters a swagger when they line up. The overall appearance is cartoon-like, matching vintage animations such as Steamboat Willie, Betty Boop, and Krazy Kat.Yup, sexy talk!
As for lettering options on skin, I'd recommend sketchbooks like BJ Bett's Lettering guides. There's also Ina Saltz's collection of typographic tattoos in her Body Type books.