Duffy finished third out of six on the first series of Celebrity Big Brother in 2001.
Acted on ITV soap opera Coronation Street as the character Ciaran McCarthy.
Played Ringo in the Irish soap opera Fair City, and starred in a television advertisement for condoms, and as presenter of The Box on Irish television channel TV3, as well as an Irish comedy Mrs Brown.
Played the title role in The Wizard of Oz, staged at the Weymouth Pavilion in Weymouth, Dorset.
Well known in Ireland as a judge on the RTE singing show You're A Star.
On 2 May 2009 Duffy and his wife won UK gameshow All Star Mr. and Mrs. The £10,000 prize money went to an autism charity.
He will star in the upcoming Loftus Hall film in 2010.
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