Readers Respond: If you wanted to get someone interested in games, what would you have them play?

From the article: The 10 Best Wii Games to Play with Non-Gamers

Gamers always want their non-gamer friends to see how cool video games are, but often the learning curve is too high or the gameplay style is too forbidding. What games will make a non-gamer stop saying "that sounds boring" and start saying "just one more level."