Katherine and Joe Jackson are finally calling it quits -- again -- or so goes the latest rumor on the estranged pair.

Although Katherine has filed for divorce twice during their long marriage but never followed through, a friend of the Jackson matriarch confirmed to Showbiz411.com that she is finally going through with it this time -- and pointed to a few reasons why.

Stage dad Joe Jackson sat down with Larry King after yesterday's hearing to discuss charges against Dr. Conrad Murray in connection with the death of his son, Michael Jackson.

Joe Jackson tells King that Murray is just the "fall guy." That other people had to have been involved in Michael's death.

Joe believes Murray got off too easy and that justice wasn't served. "I was looking for justice. And justice, to me, would be the murder charge."

Brian Oxman, attorney for the Jackson family, was heartbroken by the charges. "This doctor is giving this drug -- this Propofol -- like it was some kind of Sleep-Eze -- or a pill for sleep. It is anesthesia," Oxman told King. "It's dangerous when you do it outside of a hospital and you don't have the resuscitation equipment; you don't have the necessary monitoring of the heartbeat and the pulse and the oxygen level in the body."

Murray was booked yesterday and charged with involuntary manslaughter. He was released on $75,000 bail and is scheduled to be back in court on April 5th.

Joe Jackson says that Michael is making a bigger impact than ever since his June death from an apparent drug overdose.

"He's worth more dead than when he was alive," Joe, 80, tells "Extra" in an interview that airs Thursday night. "I'd rather have him alive."

As Michael's movie "This Is It" rakes in $2.2 million in the box office, Joe adds, "When he was living, they didn't show this."

See 30 photos from the "This Is It" premiere

Joe admits he wasn't on board with the flick at first, which documents Michael rehearsing for his comeback tour of the same name.

"I didn't know what 'This Is It' meant," says Joe, who spoke to "Extra" in Las Vegas at the unveiling of a celebrity star honoring him and his famous family.

But the movie allows him to remember Michael "as I knew him best: performing and dancing on stage. Entertaining people," he says.

Hearing Michael's songs make Joe "very emotional," he admits. He sometimes sheds tears "when I'm off to myself and I start thinking about things that we went through," he says. "No one will ever see me, though."

Check out Michael Jackson's life in photos

He has harsher feelings for his son's doctor, Conrad Murray, who is currently under investigation on manslaughter charges.

Joe says if he saw Murray, he'd "knock him out."

For more of "Extra's" exclusive interview with Joe Jackson, tune into "Extra" Thursday night!

La Toya Jackson talked with Barbara Walters about the loss of her brother Michael -- and how his three children are coping.

The 53-year-old told Walters her brother thought he would be murdered. She admitted, "When I found out he had actually passed, I said, 'No. I wasn't an accident. Michael was murdered.'"

"I don't think we'll find a person as talented, a person who thought the way he thought... a person with the heart that Michael had," La Toya lamented. "People aren't that way anymore. He was special. He wasn't God, but he was certainly god-like. He was the closest thing to a god that I knew."

Jackson was laid to rest last week at Forest Lawn cemetery in Glendale, Calif. La Toya said, "He was dressed in all white pearl beads going across, draped across... and a beautiful big gold belt." She also confirms the late superstar's makeup and hair were done "beautifully."

La Toya also explained that Michael's three children, now being raised by their grandmother Katherine, have a good relationship with grandfather Joe Jackson. "They love their grandfather," she said. "They... like the fact that he's very outspoken. And they say that, 'Grandpa, he tells you like it is.'" She added that Prince Michael, Paris and "Blanket" will continue home schooling.

Barbara Walters' interview with La Toya Jackson airs on "20/20" on Friday, Sept. 11.

Michael Jackson was posthumously awarded a star on the Palms Casino Resort's Walk of Fame yesterday, on what would have been the pop icon's 51st birthday.

Joe Jackson, Michael's father, attended the star ceremony along with Michael's fans. "Thriller" played from speakers as a drum line played and the star was unveiled in front of the Brenden Theatres in Sin City.

Organizers of the event said that Jackson's star ceremony had been two years in the making -- and that Michael had planned on coordinating the event with his birthday. The King of Pop was scheduled to receive his star after performing a slew of shows in London.

Joe told "Extra" that the Jackson family was proud of Michael's accomplishment, and said that the family is still grieving but holding up well. Joe also commented on how Michael's death was ruled a homicide, and suggested that new details about Jackson's death would be revealed soon. When asked if he would elaborate, Joe replied, "No, not now."

Michael died on June 25.

Joe Jackson has announced that Michael Jackson will finally be laid to rest on the superstar's birthday, August 29.

Jackson confirmed the King of Pop's upcoming burial to the New York Daily News. He also revealed that Jackson will be buried at Forest Lawn Cemetery in Los Angeles, where he is currently in an above-ground freezer. Reports say his mother has visited numerous times.

Michael would have turned 51 on August 29. He died June 25.