My alltime favorites:
"What's the matter,Col. Sanders,...Chicken?" from Spaceballs
"Roger, Roger" from Airplane
"DO ya love her?" Jimmy Stewart asking Doug McClure about the daughters marriage "You have to start out likeing them. Likeing them a whole lot. Then it grows into love" from Shenandoah
"The secret's in the sauce!" "Imagine that? Won't eat next to a colored person but he'll eat eggs~ shoot right out a chicken's a$$." ~ Sipsy, Fried Green Tomatoes.