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Guinness ads, most of them have never been aired on tv, but they're really good and would have cost a mint to make them!
YouTube - New Guinness advert
YouTube - New Guinness Rugby Ad - Not Yet Aired on TV!!!!!!!
this one is Guinness sponsoring the 1999 world cup
YouTube - Psyche Up Guinness Ad (Rugby)
and then this random one Cadbury one popped up, but it was released to coincidewith the world cup finals...
YouTube - Cadbury Gorilla Advert - Rugby World Cup Final Version