Using the fine search engine at groups.google.com, here is how many times the following random quotes have appeared on the usenet:
12,000 "Worst Episode Ever" 1990 "Cletus the slack jawed yokel" 1230 "64 slices of American Cheese" 982 "Lisa Needs Braces" 508 "Dental Plan" +"Homer" 462 "competitive violence that's why you're here" 144 "northern Kentucky family" 28 "southern Missouri family" 53 "We just ate Uter and he's in our stomachs right now" 28 "I hate every chimp I see.." [from chimpan a to chimpan z)