Not a line, per se, but I did enjoy him standing in front of the key board on one of those rounds where the contestant ran the table.
And, if you will allow me to go back to "Breakfast Time," I loved it whenever he referred to his two kids--"Cody and Cody." When a clueless viewer wrote in and wondered why he would give his kids the same name, he motioned to the camera and said, "[name]--come here, I want to tell you something--[leans into camera and whispers] I'm joking!"
And if you don't know why he said his kids were "Cody and Cody," remember on Regis' show before Kelly came on?...