This one was a great exercise in riffing. I had some doubts since it was deliberately cheesy, but they did the movie straight rather than open tounguei n cheek, so the riffs really worked.
My fave was when they were at the bridge school bus bit and did "Oh look the shark has rappelling gear, too." along with entering the liquor store and going, "Look out, gin, Tara's coming home."
The comment about the chainsaw cutting out of the shark, actually coming from another person, besides Fin, who happened to be carrying a chainsaw & got swallowed. Then their hope that it was Bruce Campbell.
Troy: "My father, you knew him?"
Tom Servo: "Knew him? He was delicious!"
"Nooooooo, it wasn't Nancy Grace!"
"Try levitating or something!"
(The elderly couple kissing) "The orgy that shocked a nation..."
Just a few that I actually remember, which I'm sure I've phased wrong...
"DO NOT WRECK THIS GIGANTIC DOOM."