The Muppet character Big Bird (performed by Caroll Spinney) sang a quavering rendition of "(It's not easy) Bein' green" at Jim Henson's funeral, not Kermit the frog.
Denis jokes about Mama Cass Elliott choking to death, but she actually died of a heart attack. However, the rumors were she died of choking on a sandwich, because she was found dead in her bed with a sandwich on a plate on her nightstand next to her with a bite out of it. This doesn't stop a comedian like Leary from making a joke about it.
In The Downtrodden Song Denis sings "25,672 people die every single minute". When this was filmed approximately 50 million people died each year in the world. That equals approximately 95 each minute.