Robert Blake's defense attorney, Tom Mesereau, has quit — citing undisclosed "irreconcilable differences" with the Baretta star. This comes as a blow to Blake, whose case was just two weeks away from jury selection. His trial for the murder of wife Bonny Lee Bakley could now be delayed up to six months while Blake's new defense gets up to speed. Just to refresh your memory, Mesereau inherited the Blake case from lawyer Harland Braun, who quit after the actor granted a jailhouse interview to Diane Sawyer. Mesereau's co-counsel, Jennifer Keller, also quit a while back. To sum up, Bobby has a headache THIS BIG and it's got Excedrin written all over it.