Palmer was a pro bowler. He was hurt last year. Rodney Peete wasn't great, but he was decent.
Leinart hasn't done anything yet, but it's still possible.
OJ. Marcus. Anthony Munoz. Junior Seau. Willie Mcginest. Ronnie Lott. Dennis Smith. ME-shawn Johnson. Ken Norton Jr.
Maybe not a bastion for good QB's... just HOF'ers.