Leslie Nielsen was 79 in Scary Movie 4 when he played the character 'President Baxter Harris'.
That was over 18 years ago in 2006.
In 2010 he died aged 84, starring in 123 films in his career, 10 of those after Scary Movie 4 was first released. If he were alive today he would be 98.
In Scary Movie 4, I think Leslie Nielsen looks: