I have to pipe in with our Lego Star Wars experience. I just pretty much let everyone (me, DH, and DS4) have at it gangbusters until we completed it (except the evil timed minikit challenge levels). This seemed to have the effect of making a kid who got caught smoking smoke an entire pack. In fact, today, I was busy wrapping presents and getting ready for an out-of-town party, and DS kept begging me to play a game with him. I said, can't you play wii or the computer or something? Nope, he only wanted card games or board games. So in our house, lego star wars has driven the family to board games!
Unfortunately, at the party, DS4 was given his first webkinz....