The rules are simple, if you get challenged you have 24 hours to either have a bucket of ice water poured over your head or donate $100 to charity. Once completed, you get to challenge other to do the same. Oh, and you better record it. Pics or it didn't happen.
Here are the best Ice Bucket Challenge participants.
The Top Ten
1Chris PrattChristopher Michael "Chris" Pratt is an American actor. He came to prominence from his television roles, including Bright Abbott in Everwood and Andy Dwyer in the NBC sitcom Parks and Recreation.
Whether or not it is the case in real life, seeming like a super likable guy certainly helped his case here.
2Oprah WinfreyOprah Gail Winfrey is an American media proprietor, talk show host, actress, producer, and philanthropist.
3Bill GatesWilliam Henry "Bill" Gates III is an American business magnate, entrepreneur, philanthropist, investor, and programmer.
He went all out with his!
4Jimmy FallonJames Thomas "Jimmy" Fallon is an American comedian, television host, actor, singer, writer, and producer.
5Conan O'BrienConan Christopher O'Brien is an American television host, comedian, writer, and producer. He is best known for hosting several late-night talk shows; since 2010, he has hosted Conan on the cable channel TBS.
6Aaron RodgersAaron Charles Rodgers is an American football quarterback for the Green Bay Packers of the National Football League.
7Jack BlackThomas Jacob "Jack" Black is an American actor, singer, musician and comedian. His acting career has been extensive, starring primarily in comedy films. Black is the lead vocalist of the comedic rock group Tenacious D, which he formed in 1994 with friend Kyle Gass. They have released the albums Tenacious ...read more.
Former New Orleans Saints player who is featured in the "Rebirth" statue displayed outside the Superdome depicting the return of the Saints to the stadium for the first game in almost 21 months because of the destruction caused by Hurricane Katrina. Steve became a symbol of recovery for the city, but is now battling ALS himself.
9Foo FightersFoo Fighters are an American rock band, formed in Seattle in 1994. The band was founded by Nirvana drummer Dave Grohl after the death of Kurt Cobain and the dissolution of his previous band. The band consists of Dave Grohl (lead vocalist, rhythm guitar, main songwriter), Pat Smear (rhythm guitar), Nate ...read more.
They parodied "Carrie" so perfectly and there was so much unmelted ice... And who doesn't love Dave Grohl dressing as a woman (again)?
Expected nothing less than brilliance from the Foo's!
If it were anyone else, the video would be ho-hum. But the fact that the queen of here genre is standing, soaking wet in her kitchen makes it.
11Homer SimpsonHomer Jay Simpson is the protagonist of the American animated television series The Simpsons as the patriarch of the eponymous family.
12Robert Downey Jr
Too bad Movie 43 is so obscure because her using the challenge to pay homage to her role in that film would have been awesome.
15Cristiano RonaldoCristiano Ronaldo dos Santos Aveiro is a Portuguese professional footballer who plays as a forward for Italian club Juventus and the Portugal national team.
In typical lady gaga style, she weirdly and silently dumps the ice water over her head and doesn't even flinch.
18Triple HPaul Michael Levesque, better known by his ring name Triple H, is an American semi-retired professional wrestler, corporate executive, and actor.
There was actually lots of unmelted ice in that bucket. After that he did his signature spit. Awesome - imsosexy112
20Mark HamillMark Richard Hamill is an American actor and voice actor. He is best known for his portrayal of Luke Skywalker in the original Star Wars trilogy – Star Wars, The Empire Strikes Back, and Return of the Jedi and his portrayal of the Joker in Batman: the Animated Series.
21Cookie MonsterCookie Monster is a Muppet on the long-running children's television show Sesame Street. He is best known for his voracious appetite and his famous eating phrases, such as "Me want cookie!" "Me eat cookie!" and "Om nom nom nom".