We started watching this show with our 14 year old daughter. She loves it. It has grown on me. Because of it's placement BEFORE American Idol on Fox, which we watch as a family, it has been hard to keep our 8 and 12 year old from watching it. We have started letting them watch it on a night by night basis, and they've all enjoyed it. I haven't noticed violence and fighting any more then video games and movie previews, etc. that they are exposed to all the time.
The role models on the show are iffy. While we thoroughly enjoy the character, Gerraro, his background is shady and his method's of getting information is frequently illegal or unethical. Still, much is only implied and off screen.
So, currently we are letting them watch it each week. I wouldn't call is a "family show" but the last 6 weeks of the season were o.k. for our family.