[Hollyoaks] Sam `O.B.` O`Brien is a fictional character in the long-running Channel 4 British television soap opera Hollyoaks, played by Darren Jeffries. He debuted on-screen on 16 June 1997 before leaving on 26 February 2008. He later made a brief return in July 2008 before leaving on 11 July 2008. While on the show O.B.`s storylines revol...