Wow, I've had too many to count. Although, some of my favorites include chasing King Boo into Second Place on the Rainbow Road two years to the day I fought him on the mansion, the revelation of Shy Guy's mask, rescuing him in Super Mario Galaxy(four times), that scene with the Waddle Dee, the Year of Luigi itself, hearing him scream when getting launched out of the Barrel Cannon for the first time, the the wait for, and the memories of Dark Moon.