Super Mario Bros 3 (though I never completed it)
But Kirby's Adventure and Legend Of Zelda are both excellent
I'm trying Metroid right now. Very tricky but I'll see how I get on. I may give up in favour of the free Legend Of Zelda Four Swords game coming out this week.
( Edd: The Unfunny Try-Hard Edgelord, Tue 27 Sep 2011, 13:23, archived)

i wish i knew anyone nearby that had a dsi/3ds
:(

quite interested in kirby mass attack, also
( manolith hooray for me, Tue 27 Sep 2011, 13:35, archived)