Let's add a few more of mine:
Shogun: Total War: This was another revelation game for me. The huge battles blew me away. My gaming moment is the first time I completed the campaign without quickplaying a single battle. It was Epic. It took forever. It felt awesome. No Total War game since has ever really captured that feeling again, although Rome came bloody close.
Magic the Gathering: Duels of the Planeswalkers: This is an okay game, but it had an unexpected gaming moment for me: it's the first (and only) game in wheich I saw another person naked. Luckily for me (given my preferences), it was a girl (and not unpretty). It seems she didn't expect the Eye to blast her image across the internet when playing online. She clearly got a shock. So did I. She quit out. I then warned my wife (who plays the game), and she wisely made sure she was fully clothed the next time she went online.
SingStar: The first game I played with both my kids at the same time. The videos are online in the game, and we're terrible singers. My gaming moment here is my daughter's video being in the top 100 videos for over a year, earning her a Gold trophy for getting so many views. She was so, so pleased.
