Those games are fantastic!
Don't even get me started on LM! I love that series so much, and it holds a special place in my heart. I first found out about it when I was little, and when the second installment, Luigi's Mansion Dark Moon came out. I think this game to an extent helped me get over my childhood fear of vacuum cleaners, since you use the Poltergust as a tool/weapon to get through the mansions (and hotel in the 3rd game). Since then, I've wanted a Poltergust3000, 5000, and/or G-00 to call my own.