Probably either Jonny Wilkinson (england world cup winning fly half that famously scored the winning drop goal against Auz in the final) or Dan Carter (the NZ fly half)
Shane Williams
Well duhh he is a famous rugby player well actually the best rugby player well he was so if you don't agree well you just ain't a rugby fan and he was the best rugby winger in the world
There is no world-class player named "Danny Collins", but in New Zealand there is a famous flanker named "Jerry Collins"
Ireland is one of the world's top international rugby teams, so they have and have had many famous players. Players like the current captain, in March 2015, Paul O'Connell and the recently retired Brian O'Driscoll, and many, many others.
playing rugby for England and winning the 2003 rugby world cup for England
The best rugby player in the world of 2012 is.... Dylan Hartley
Jac Cernyw
sonny bill williams
south Africa (the springboks)
jarrod hayne
Johah Loma is most famous for being an elite athlete and rugy player. He is said to be the first international superstar of rugby union. The he holds records for most tries scored in both All Black against England and Rugby World Cup Tournaments.
For the 2011 RWC its the New Zealand All Blacks