Gavin Newsom wants to give former Mayor Willie Brown's a choice gift for his 75th birthday. He wants to rename a street in his honor. And not just any street, mind you; he wants to give him Third Street. which stretches five miles from Bayview-Hunters Point through Mission Bay, ending at Market Street. Newsom made the announcement on his weekly radio show this weekend while Brown was a guest. Brown pretended to act surprised when told the news, then Newsom handed him a street sign that read, "Willie L. Brown Jr. Blvd.'' The Board of Supervisors, however, would have to sign off on it. To find other SF streets renamed in honor of former mayors, check out SFGate.