Comedian George Carlin, best known for his edgy routines brimming with dirty words, died Sunday of heart failure in Los Angeles at the age of 71. Carlin became a comedic icon in the '70s with his infamous "Seven Words You Can Never Say on Televsion" routine which we think is the best video to serve as a tribute to the potty-mouthed master. And as if it wasn't obvious enough, we'll still say it: Contains Adult Language.