Ozzy and Kelly - whom the heavy metal pioneer shared with wife Sharon, along with daughter Aimee and son Jack - were close. Fans first got a look at their family dynamic on The Osbournes, a reality show that ran on MTV for three years in the early 2000s.

Ozzy, who was open about struggling with Parkinson's disease for years, died at age 76 earlier this week. View Entire Post ›

"The Osbournes kicked off a wave of celebrity-driven reality TV," Andy Dehnart, president of the Television Critics Association and editor of the Reality Blurred website, told the BBC. According to The Osbournes executive producer Greg Johnston,