ZealI was too sleepy to post about this last night, but I started NSMB.
It's my least favorite of the NSMBs, and one of my least favorite Mario platformers in general, but it's still an *excellent* game.
That really goes to show how much care Nintendo consistently puts into their flagship series. It's quite a contrast to some other series like Sonic and Mega Man which are kinda mixed bags, having both some of the best platformers of all time and some regarded as the worst ever.