(Cover) - EN Showbiz - Jack Osbourne decided to make a documentary about his father Ozzy to prove the rocker is no longer in the "clutches of addiction".

The veteran rocker has been in the music business for more than 40 years and is best known as the frontman of Black Sabbath. Jack has produced a film called God Bless Ozzy Osbourne to pay tribute to his career and hellraising lifestyle. Ozzy attracted a whole new army of fans when his family were featured in MTV show The Osbournes, but Jack is disappointed that many people don't realise his dad has transformed himself since the programme ended.

"The whole point was to highlight who he has become since. Everyone has seen The Osbournes and I don't think that people were really aware that when we were doing the show he really was in the clutches of his addiction, he was in a pretty bad way with drugs and alcohol," he explained during an interview for British television show Daybreak. "Since the show stopped he has been sober for five years and he is a completely different person. I was frustrated with how he was being pegged as something he is not, so it started out of resentment really."

Ozzy, 62, was shocked when he first watched the documentary and was quick to ask his wife Sharon if he was fairly portrayed in the film. Jack is confident it shows Ozzy in a positive light and claims that exploring his upbringing helps to explain a great deal about his personality.

"No one really knows his complete story. He did write a book but he kept it at a very surface level, whereas being his son I was going down roads that he didn't in his book. The one thing he said to mum after seeing it was, I'm not that bad am I?' She didn't tell me what her reply was!" the 25-year-old laughed.

"The film definitely portrays the father he is. The thing about my dad, he is old school in the sense that he grew up in the early 1950s in England with that working class mentality, you know, a roof over your head and food on the table and you are fine. He is heavily rooted in that. And his mentality really is, Get your head down, don't complain and get the job done.' That is not necessarily a bad thing." (C) Cover Media