Me and my mate who was a god at Wipeout 2097 on link up one night, I must have played him 50 times on the same track and not beat him.....then I come out the last corner on the last lap about a second in front, I start to cross over the chequered squares towards the finishing line with the biggest grin on my face. Then a perfectly timed rocket (not homing) straight up my arse, ship explodes on the line. game lost. big grin gone. Awesome game roll on a PS3 online version (with LAN support would be nice!)
Also 8 v 8 Halo 2 in my mates flat, at 99-99 out of a hundred. The most tense I have ever seen a game, everyone just tried to hide and not move!