It's hard to believe, but Boyzone - the second most successful boyband in Britain, ever - are celebrating their 20th anniversary this year. It's been two decades since 'X Factor' judge Louis Walsh , then a theatrical manager, put an advertisement out in the Irish press for auditions to form an Irish group to take on Take That . Boyzone in 1994 Keith Duffy, Stephen Gately, Mikey Graham, Ronan ...