From "Brotha From the Third Rock", we get this little gem.
Philly Phil: *while walking around what he believes is an alien plant with broken glasses and while being disoriented* 'Well, wherever I am, it appears to have air, sunlight, and- *trips* ... gravity.'
In "Free Philly", when Philly Phil is reunited with his friends, if you listen REALLY closely, you can here Kam going: "Ahhhh... Cheesy Puffs..."
Everything that led up to the kids becoming convinced that Sunny is a pirate in "Hunt For the Red Blobtober." Actually, everything in that whole episode.