Isaac Farris Jr., the son of Dr. King's sister Christine, read a statement from Dr. King's widow, Coretta Scott King.
The film also featured his sister Christine and their mother, who wrote a cookbook for the film.
Having used a wheelchair for the past year, Gregory died from the disease on 19 November 2007 with wife Erica, parents Joan and Keith, sister Christine and brother Philip by his side.
Her sister Christine is a flautist and pianist, her brother Gordon is a guitarist, and her maternal great-uncle Franz Wiederhofer was lead violinist in the Vienna Symphony Orchestra.
"Kids talk about movies at school," said Glenn Moody, 13, who was watching "A Bug's Life" with his sister Christine, 9, in Rye Brook.
This is Jim Baler and his sister Christine,** said Arden.
His sister Christine plays for the national women's water polo team.
His sister Christine is also member of the German skimountaineering team.
She spent her remaining life with her sister Christine at Coswig Castle.
It was the wee hours of the night and my sister Christine, I can still see us there on our hands and knees, trying to be as quiet as possible and giggling all the way, crawling to the refrigerator.