Before completing the challenge the Young Munster clubman nominated Irish President Michael D Higgins, dancer Michael Flatley and U2 frontman Bono to complete the challenge.
And now for the uncut HD version, complete with slow motion replay...
O'Connell was not the only Munster player to complete the challenge, with Cork based players also getting in on the action and nominating London Irish, Racing Metro and Agen to complete the challenge next.
Text MND to 50300 to donate €2 to the Irish Motor Neurone Disease Association (IMNDA)
What is the ice bucket challenge?
- The Ice Bucket Challenge is the latest charity craze to take the internet by storm, with people pouring iced water over their heads in a bid to raise money for charity.
- Anyone who completes the challenge posts the video online and then nominates someone else.
- The craze went viral on social media after a US baseball player and motor neurone disease patient, Pete Frates, floated the idea of the challenge in a video on a social networking site. He got the idea from a friend.