Internet trends usually burn out fast, but a handful crossed over into genuine cultural moments. The Ice Bucket Challenge raised over $115 million for ALS research worldwide and got everyone from Bill Gates to world leaders dumping ice water on themselves for charity. The Harlem Shake spawned millions of copycat videos in a matter of weeks, turning a 30-second clip format into a global phenomenon. And "Damn Daniel" turned two random teenagers and a pair of white Vans into a genuine pop-culture reference almost overnight. Which of these do you think actually earned its place in internet history, versus just being a flash in the pan?