Throughout the series, Pendelton resembles nothing so much as a doctor making house calls, helping clients who see their tattoos as a way of communicating their emotions or as a spiritual release. The trip is also a personal journey for Pendleton, who's trying to reconnect with his art after leaving Las Vegas and taking time off to get clean and sober -- and to settle down and be a good parent.

The show is pretty edgy, and the frequent discussions about drug addiction and Pendelton's difficult childhood make Tattoo Highway an iffy choice for younger kids. And it may not be a great pick for anyone who doesn't want their kids to get tattooed. But Pendleton has an honesty about him that makes him likable, and many of the things he talks about -- including fidelity, parenthood, family, and the importance of staying drug-free -- are positive and heartwarming. Overall, this series shows that while the tattoos may not be for everyone, the stories behind them are often worth listening to.