Definitely worth it. I don't listen to his political rants, but generally have found his principles to be sound. I've paid off $15k in 6 months. The TMMO forums (
www.mytotalmoneymakeover.com) are a great resource full of really supportive, experienced people. I spend a lot of time there to keep me motivated.
To the PP who asked about the emergency fund, DR recommends saving $1,000 as a "baby emergency fund" and then tackling debt. The most important part is getting on a written budget so you know where your money is going. He says that it's 80% behavior and 20% knowledge. After you pay off debt, you build you fully funded emergency fund (3-6 months expenses).