Biggest NFL draft bust of all time?

I'l go with Reggie Bush simply because he was so good in college even people here in Texas said he was going to be better than Barry Sanders. There was so much hype it's unbelievable. I never thought he would be successfull in the NFL. And I was right. He went from people saying he was going to be better than Barry Sanders to being a back up. Sure he has talent but he's wasted it, and has not been nearly as productive as expected. Sheesh even Marion Barber is better than him and Marion Barber SOCKS!