The Ocean's Eleven producer had surgery for a spine problem but contracted a deadly infection.
Weintraub had turned his home into a hospital ward when doctors told him he wouldn't survive the illness, and even said a tearful goodbye to his loved ones as his condition deteriorated.
He tells The Sunday Times Magazine, "No one knew what it was. I've heard eight different stories - it was staph, it wasn't staph (staphylococcus bacteria) - whatever it was, it was killing me. Literally eating my body. I had at least five or six doctors taking care of me. I had an IV in me for 16 weeks. A drip to keep me alive.
"I'd always been afraid of death... (but) I came to a place when I wasn't scared any more. I brought my family in to say goodbye. Everyone was standing next to the bed - the rabbi, the doctor, (girlfriend) Susie, (wife) Jane, my kids - I thought that was it. I was finished. I looked awful and didn't want to see anybody. George Clooney, Brad Pitt, Matt Damon all came to visit and I told Susie not to let anyone in. Clooney snuck in behind the florist..."
Weintraub is adamant he had an out-of-body experience as his life ebbed away, but he's convinced he was brought back from the brink by the screams of a rabbi.
He says, "I felt myself float out the window. I swear to you, I was out the window. The rabbi was screaming at the top of his lungs, 'You can't have him. He can't go now.' And the next thing I knew, I woke up. Now I don't know what happened, but I had an experience. I came back."
The Ocean's Eleven producer married his wife Jane in 1965, but later found love with mistress Susan Ekins.
Weintraub approached his spouse about getting a divorce, but Jane rejected the idea of splitting up, fearing they would squander his millions paying for the divorce proceedings alone.
The trio now live an unconventional home life - but Weintraub insists it all works out.
He explains, "They make it work. I'm very much in love with my wife, we've been married 48 years and I met this other woman and I'm very much in love with her.
"We didn't get a divorce because we (he and his wife) didn't want to screw up our estate. I worked very hard for my money. I started out with nothing and ended up with a lot. She didn't want to give it away to lawyers. She said, 'Go to Susie and and ask Susie if she needs to be married.' Susie said no, and they became best friends."
Jerry Weintraub, a film producer and former boss of the United Artists studio, has filed papers at Los Angeles County Superior Court with his estranged wife Jane, claiming the man, named only as Steven, was fired amid allegations he stole $45,000 (£28,000) in cash to support a "gambling and drug habit."
The document goes on to reveal that just days after his dismissal, Jane received a phone call in the early hours of the morning from Steven's daughter, who claimed her father was upset and was on his way back to the house to collect a gun.
The papers claim the daughter warned them Steven, who knew all of the access codes to Weintraub's property, "planned to come to our house with his gun."
The Weintraubs are asking a judge to keep Steven away from the entire family - and their mansions in Malibu, Beverly Hills and Palm Desert, according to TMZ.com.