Mine.
For me, I chose 3.

1. 30th June 1998. England vs Argentina. A match mostly remembered for Beckham getting sent off pathetically. Not for me. I remember Michael Owen running with the ball, and scoring (to quote the commentator) "a wonderful goal". Yes, we went on to lose on penalties, but I still remember that goal - And here it is (no horses, rickrolls, or anything like that

2. - May 25th 2005. Liverpool vs AC Milan. Champions League final. Here was the match we'd been working towards all season. I told my parents I was not to be disturbed, turned my phone onto silent, and waited. It wasn't long before my head was in my hands. 1-0 down that early? Oh dear.
It got worse. Over the next 45 minutes I watched AC decimate our defense, and go into the break, a deserving 3-0 up. I got a text off my brother, simply saying 'Have faith'. It's pretty bloody hard at that point in time.
The second half begins, and something has changed. It's like we're an entirely different team to the one from the first half. We'd only made one substitute, but it seemed to make the world of difference.
9 minutes later, Stevie G jumps, and scores a cracking header. 3-1
2 minutes later, Vladimir Smicer hits the ball low and hard, into the back of the net, 3-2.
4 minutes later, Stevie G is taken down in the oppositions box, PENALTY! Millions of fans around the country are glued to the set. Xabi Alonso takes his run up...and it's saved! Wait, he's not held onto it, it's 3-3!
The rest of the game is almost a blur, I was in shock. Eventually it comes to extra time, then penalties. By this point I'd had my heart going a million beats per minute for about an hour, and it was killing me. During the penalty shootout, I had to mute it for a few seconds, just to gather myself.
Finally, Andriy Shevchenko, arguably the best striker in the world, lines up to take his penalty. Jerzy Dudek dives, but manages to save the ball with his foot. We've won it! We've just had the most extraordinary game of football I've ever seen, and now we're European champions once again! One of the best nights ever!

3. - November 22nd 2003 - Rugby World Cup Final. (Don't worry, I'll finish with a short one).
The game has gone into extra time, and in the 97th minute, Flatley scores a penalty, taking the score to 17-all. With less than 30 seconds left on the clock, Jonny Wilkinson - the poster boy of the tournament for England - scores a drop goal, winning the tournament for England. My moment is not just him scoring the goal, but the commentary.
Commentator one "He's made the drop goal, and won the tournament for England" (or something like that)
Commentator two "YYYEEEEEEEEEEEEEAAAAAAAAAAAHHHHHHHHHHHHHHHH!"

Fucking Magic.
( Agnostic Antichrist Baltimora, Mon 18 May 2009, 13:13, 3 replies, latest was 16 years ago)

Number three
I remember watching that. A great moment (particularly calling up my welsh mate who had predicted england to lose and gloating).
(Potty Jag har smör i min rumpspringa, Mon 18 May 2009, 13:15, Reply)

Beautiful
Love it!
( Agnostic Antichrist Baltimora, Mon 18 May 2009, 13:21, Reply)

I was in Sydney
watching the rugby final in a bar, I think there must have been about five english people there, including me and the girl I was with. It was so satisfying walking round the city that night with thousands of dejected australians.
(Bazongaloid, Mon 18 May 2009, 13:25, Reply)

Number 1
Was in 'The George' by Clapham South tube station, the place went mad when that happened, got great memories of hugging this girl and her grinning at me like a loon. Fabulous stuff...
(Apathyman Prepare to be underwhelmed..., Mon 18 May 2009, 15:15, Reply)