Sam Simon, 'Simpsons' Co-Creator, Dead at 59

He had been battling colon cancer for the past three years.

"It is with much sadness that we must let you know that Sam Simon has passed over," the message read. "We all miss him, and in his honor, we will continue bringing his vision to light through our work at The Sam Simon Foundation. We take comfort in knowing how many greetings he is receiving across that Rainbow Bridge. We love you Sam!"

Another Facebook page for his foundation added, "He passed away peacefully in his own bed, in his own home, surrounded by people and a dog who loved him."