I'm a big Goodson fan. I liked him in Carolina and living in California, I was able to see him a lot this last season in Oakland. He's just a good back. If you could get him to a cheap contract than I think it would be a great addition.
If he's going to cost 3 to 4 million though, than I'd pass as much as I like him. Running Backs are really just too interchangable to pay a lot of money for imo.