How to follow the most successful day in British Olympic history?
When we pick up six golds in 12 hours, what happens next?
I found the answer in my deeply contrarian instincts. There was only one thing for it - a day of watching foreign women throwing balls at goals - handball and water
Amid the understandable Brit-mania sweeping the country, I hope we remember these Games are about more than our own success.
They are global celebration, a place of diversity where people are united by sport.
What better place to remember this than the Copper Box, where Brazil played Angola in the handball?
In the cynical, pre-Olympic age, handball was a punchline. A byword for obscure sport played by goofy Eastern Europeans. The kind of thing you might watch ironically in a Danish hotel.
It is not one of these Olympics' hot tickets, but it has its own stadium (though it moves to the Basketball Arena for the knock-out stages) and it provided an uplifting experience.
Although there were some Union Jacks about for Britain's game against Croatia later on Sunday, this was certainly the most foreign-feeling venue I have visited.
On display were the following flags: Brazilian, Angolan, Swedish, Norwegian, French, Belgian, Hungarian and Kenyan (!).
Adding to the foreign feeling - my unfamiliarity with the sport, and the cacophony of horns, thunder sticks, chants in Portuguese and even a group of Brazilian 'ultras' behind the goal to my right.
You could have been anywhere in the world. I loved it. As did an almost-packed house.
The intimacy of the venue is brilliant - a tight, 7,000-capacity arena that gives you a great view of the action.
And what action. I had seen handball on TV, but never in person.
It was fast, physical and aggressive - Angola's Marcelina Kiala was pole-axed by a horrible clash of heads in the second half but played on.
Play of the day came from Brazil's Alexandra Nascimento, who made an amazing running one-handed catch from the goalkeeper's 35-metre throw out.
Sprinting downfield, she judged the ball perfectly as it dropped over her right shoulder, threw out an arm and made a perfect grab. If an NFL receiver had made that catch, somebody would instantly have handed him $25 million.
Trailing 22-13 at half-time, Angola made a stirring comeback to 27-25 with three minutes to go. The place was going absolutely wild. Brazil held on, and both teams got a terrific ovation.
That is the great thing about the Olympics - you cannot move for brilliant sport and shouting fans.
In an obscure stadium, watching obscure teams playing an obscure sport, the atmosphere and entertainment made you feel like this it was the only place in the world.
VENUE SCOREBOARD - COPPER BOX
ACCESSIBILITY/FACILITIES: 8/10 - Slightly hidden away behind the food stands at the bottom of the Olympic Park, the Copper Box is nevertheless straightforward to get to and the relatively small capacity makes finding your seat easy.
VIEW: 9/10 - You could tell this was a purpose-built stadium. The perfect size, the perfect ambience. And a great view from anywhere.
FANS: 9/10 - What a great atmosphere. The crowd really got behind Angola as they made their late comeback, and the noise was terrific throughout.
SPECTACLE: 7/10 - Much as I enjoyed it, this wasn't unforgettable Olympic history unfolding. But my goodness it was fun.
X-FACTOR: 8/10 - As I queued for coffee at half-time, I stood behind a dad and his son - the lad was almost unfeasibly excited about a women's handball game. It was magic. That's your Olympic legacy right there.
TOTAL SCORE: 41/50 - Intimate.
I expected to find the water polo more exciting than the handball, but the opposite was true.
I was there for the women's quarter-final between Hungary and Russia. These countries contested the infamous 'Blood in the Water' match in Melbourne in 1956 when Russia was the USSR.
Another purpose-built stadium produced plenty of noise but I just couldn't get into the game.
Anything that involves swimming is necessarily quite slow, and every attack seemed to be much the same - one team advances; lobs the ball about while the opposition parks the bus; shoots just before shot clock runs out.
To my untrained eye, it had none of the speed or clever use of space of handball. It seemed to be mainly about evading your marker's clutches long enough to get a shot away.
Of course there is more to the game than this - but the 'more' lurks under the water, judging by the amount of tugging, dunking, scragging and yelping going on.
It looked tiring and difficult, but provided no visual razzle-dazzle.
However, the end was a treat. Russia trailed 11-10 in the final seconds and had one last chance to send the match to extra time.
Hungary goalkeeeper Flora Bolonyai saved the Russian shot only for the rebound to be bundled in - but time expired before the ball hit the net and Hungary won.
London 2012 - thrills around every corner.
VENUE SCOREBOARD - WATER POLO ARENA
ACCESSIBILITY/FACILITIES: 8/10 - Just about the first place you come to when you enter the Olympic Park. My side of the stadium (the small side) didn't appear to have any refreshments.
VIEW: 5/10 - An idea: a pool with glass sides so spectators can get an aquarium-style underwater view. So much goes on under the surface it is hard to grasp what is really going on. The view is not great from the back of the tall main stand.
FANS: 7/10 - Plenty of noise when the ball went in, but otherwise there were just yells of encouragement (many from the very shouty Hungarian coach) rather than a wall of sound. The loudest roar when Hungary scored the game-clinching goal to make it 11-9.
SPECTACLE: 6/10 - I'm afraid it just didn't appeal to me. Touring as many venues as possible gives me about an hour to 'get' a sport. I couldn't do it with water polo, and that is probably my fault. Good finish, though.
X-FACTOR: 6/10 - It's a proper Olympic sport played in a fine venue. But you probably need more than passing acquaintance with it to get the most from your viewing.
TOTAL SCORE: 32/50 - submerged.
Other venues rated
Eton Dorney (rowing): 41/50 - momentous
Lord's (archery): 40/50 - ancient and modern
North Greenwich Arena (gymnastics): 39/50 - complex
Aquatics Centre: 38/50 - noisy
Basketball Arena: 36/50 - slick
Lee Valley White Water Centre: 36/50 - thrilling
Horse Guards Parade (beach volley): 36/50 - raucous
Box Hill (road race cycling): 35/50 - rural
Riverbank Arena (hockey): 32/50 - temporary
ExCel (weightlifting): 31/50 - functional
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Alex Chick will be writing from London 2012 throughout the Olympic Games.