I've not liked video games before, but this gave me a special kind of profound disappointment, not commensurate with the ~$5 I payed for it on the Wii Store (RIP).
I spent roughly twenty years hearing about how great this is and hearing it called a classic. It's the same boring Mario look and the same boring Mario plot (Bowser kidnaps the Princess... with a twist). It's the most tedious gameplay a JRPG has ever had, and in a genre that's driven by story, you can't do much with characters whose personalities are one word or less.