Wow, I didn't realize exactly how much love there was for Luigi's Mansion! :P I probably just played it in the wrong mood or something; I only end up playing it once.
But, to be clear, I don't mean to suggest it's even close to the worst Mario game ever! That honor still goes with Mario Is...
I'm probably the only one, but I was bored to death with Luigi's Mansion. I thought, "This will be great! Luigi finally has his own title that doesn't suck like Mario is Missing." But I was wrong.
I have most of them, and I enjoyed them a lot when I was younger. But, much like the Super Mario Bros. Super Show, they didn't age well. It's too bad they didn't make these things more comedic like SpongeBob and Shrek. If they had, they might still be going today.