Dancing feet from Simon Zebo, Australia off their feet at the breakdown, shot at goal for Ireland?

Up steps Johnny Sexton, over goes the kick and Ireland are back in front.

Martin Howells:, external Can't see New Zealand winning this. I mean Wales are bang in form, undefeated since last weekend... doesn't get better than that!

Rebekah Macdonald:, external The singing of our anthem is giving me chills today. Well done, Millennium Stadium.

The haka will be led by Liam Messam.

Richie McCaw locks his gaze on Sam Warburton and puffs out his cheeks...

Guests first. "God Defend New Zealand" gets a decent outing around the Millennium Stadium.

Before 70,000 voices ring loud and proud with Hen Wlad Fy Nhadau to thoroughly trump it.

We're back, Johnny Sexton belting the ball deep into Wallaby territory.

Maybe the Welsh Rugby Union would have a bit more money for contract talks if it didn't go so big on the pyrotechnics.

Sam Warburton's men emerge amid a barrage of fireworks. The crowd almost drown out the explosions with cheers. This is on.

Mick:, external No conundrum, Denis Hickie (see 36mins). Ireland missed tackles. Two missed tackles for the first try. unacceptable under Joe Schmidt

Things that were less forward than that pass to Bernard Foley.

Number one in a series: Casanova

Wales' New Zealand-born coach Warren Gatland, speaking on BBC Two: "The haka still has a place in world rugby. It's a tradition. We know it's coming. We haven't even spoken about it this week. The players will face that part of it. People don't go on about Fiji or Tonga or Samoa doing it. It's great for the game and the crowd come to see it.

"Even if history weighs heavily, you want to win against a southern hemisphere team. England beat them two years ago Ireland probably should have beaten them last year. They've been on the road for nine weeks, and we hope they're tired and looking forward to getting home. We've had a good week in terms of preparation and trained really well. We're really excited."

Richie McCaw sprints out at the head of the All Black queue to applause from all around.

Wales wait in the tunnel as the atmosphere brews a little stronger under the Millennium Stadium roof.

Image source, Getty Images

Sheep? Leeks? Daffs? Check, check, check.

The crowd have come fully equipped. Now for the players...

Image source, Getty Images

Here is another blast from the past. And you'll like this, I promise.

In 2006 New Zealand had performed the haka in their own dressing room in protest at Wales' plan to sing their national anthem after, rather than before, the war dance.

Two years later the All Blacks were back in the Millennium Stadium. This time Wales let them slap thighs and puff chests after the national songs.

But Warren Gatland's side were damned if they were going to turn away first after it was done.

A stand-off ensued with referee Jonathan Kaplan trying to shoo both teams back for the kick-off while the 74,000 crowd went bonkers.

Wales won the first half 9-6, but lost the match 29-9.

You can see a clip of the pre-match stare down here.

Image source, PA

Ireland:

Tries: Zebo, Bowe

Cons: Sexton (2)

Pens: Sexton (2)

Australia:

Tries: Phipps (2), Foley

Con: Foley

Pen: Foley

Image source, PA

Wow. We've seen more action in 40 minutes than you get in a whole series of Game of Thrones, and it's hard to remember a half like it.

First Ireland dominated, then Australia exploded into life, before Ireland came back at the death. Breathless stuff.

The big question is, was the TMO's great, great grandfather the lead engineer on the Leaning Tower of Pisa?

"Looks pretty straight to me mate, dunno what your problem is."

Wales' run against the All Blacks is pretty atrocious from a red-tinged point of view. But then so was the piece of gamesmanship that kept New Zealand's run alive in 1978.

With his side trailing 12-10 at the Arms Park and only a couple of minutes remaining, New Zealand second row Andy Haden opted to fling himself out of a line-out to simulate a Welsh shove and earn a penalty.

Or as the man himself described it, "I went to Frank Oliver, my locking partner and told him the plan in four words: 'I'm going to dive'."

Referee Roger Quittenton of England blew up. Brian McKechnie split the sticks. And a generation never forgave.

You can see the clip 1:25 into this excellent video on the BBC Sport website.

Image source, Getty Images

Former Baywatch and Knight Rider star David Hasselhoff is in the house at the Millennium Stadium, and will be cheering on Wales, as his partner Hayley Roberts is from Neath.

He tells Sonja Maclaughlan on BBC Two: "I'm very excited. When we met, I was a fan of rugby but I didn't know it was a religion here. But I love the haka. I think the Welsh team now should do the Hoffa."

Image source, Getty Images

Richie McCaw will lead New Zealand for the 100th time today.

How has the great man survived the rigours of modern rugby to reach such a landmark? Well, this BBC iWonder guide, on how players recover from the car-crash hits of today's game, might give you a few hints.

It also features an animation of Jamie Roberts that is like the illegitimate offspring of the Incredible Hulk and one of the I, Robot baddies.

Johnny Sexton bisects the sticks. Can the second half possibly live up to the first?

Another Ireland penalty, this time Johnny Sexton will look to tie things up by going for the posts.

Image source, Getty Images

Give Australia the ball and they will leave your defensive line looking like a blanket that's gone 10 rounds with a cohort of cloths moths.

Fair play to Ireland though, back then come and win a penalty, which gives them good territory inside the Wallaby 22.

One last chance this half.