I have mixed feelings about Ramsey - overall his advice is very good for people who struggle to get out of debt (which I agree is the first step to wealth building), it is very simplistic but is solid advice to his audience. I think he misses the mark by telling people to not start retirement saving until they get to one of his higher steps; I think, generally, that you are an idiot to not get an employer match in to a 401k if it is offered). And he somewhat misses the mark with his debt snowball of paying off smallest balances vs. paying off higher interest rated debt - but there is real value it paying off a debt and moving on to the next one. Especially in a situation where the large, high interest rate debt may take years to pay off.
His advice to get a 2nd or 3rd job, as hard as it is to hear, is likely the only way some people will be able to paydown debt. There are too many examples of how easy it is to get credit, especially credit cards.
One last overall comment, we have friends that live in the Brentwood/Franklin area just outside Nashville, and they say that Dave's house is up on one of the hills in a gated private exclusive community which strikes me with a wierd vibe as someone making his money selling get out of debt advice to the poors. And recommending insurance companies, financial advisors,etc - all of which I'm certain he gets a good cut from.