Opinion and all but I would put NMH over NMH2 because only the first is a true cult classic (the sequel is more of a parody of being a sequel).
Also I strongly suggest Kororinpa (it's a very simple game that validate wiimote tilt controls, pure arcade bliss).
Shitting on every console's library most of the time just show the lack of knowledge of who talks (there are very little systems without any at least a few enjoyable games, looking at you Watara SuperVision...).
Wii library is undervalued because Nintendo big hits overshadow the rest of the games (even Nintendo smaller games like Punch Out!!) for those that just gave a casual look to Wii library.
Also Wii lack those kind of big budget releases more common on PS3 and Xbox 360 so if a guy is interested only in those he won't find anything palatable on Wii.
That said the true breath of Wii library stand with the mid tier games by Nintendo or third party.