The result places South Africa and Australia on a quarter-final collision course before a likely meeting with New Zealand, if as expected they defeat France, in the last four.
Meanwhile the top half of the knockout draw could entirely consist of Six Nations teams - a prospect that appeals to Ireland coach Declan Kidney.
"It's probably good for the World Cup. The Tri-Nations team play a lot against one another," he said.
"Let the Tri-Nations sort out one half and the Six Nations sort out the other half.
"It's only a World Cup if a northern hemisphere side plays a southern hemisphere team in the final."
Beating Tri-Nations champions Australia, the tournament's second favourites, has given Ireland a fantastic chance of reaching the semi-finals for the first time.
It was undoubtedly their greatest World Cup performance, though Kidney was reluctant to comment on whether it was their biggest win of all time.
"When you're involved in the middle of something it's probably best not to say. It's for other people to answer that," he said.
"We'll enjoy the night tonight. It's a good reason for a party.
"Yeah we're fairly pleased with that. When you've played a team five times in a competition it's nice to get one over them eventually.
"But it will be meaningless unless we win the other two matches because we're a long way from qualifying from our group yet."
Popular Munster hooker Jerry Flannery, who was ruled out of the World Cup with a career-threatening calf injury on Thursday, presented the team with their jerseys on Friday.
"Jerry was hugely disappointed to miss out," said Kidney.
"Those of us who know Jerry know how hard he has worked to get fit for this World Cup.
"We've always talked about the importance of what the non playing 15 bring and this was one of those occasions."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.