Most underrated and overrated Mario games in your opinion?

Overrated: Super Paper Mario. I didn't think it was anywhere near as good as its predecessors.

Underrated: this is harder. I don't know much about the popularity of Mario games... I think I'll go with Mario Kart: Double Dash. In my opinion, it is the BEST Mario Kart game, but I don't see it mentioned that often.

I think the most underrated would be Super Princess pêche, peach with the most overrated being... None! I don't find any to be overrated at all.

Overrated: Super Mario Galaxy 2
Underrated: Super Mario Bros 2