I'm more a fan of the Wii than a Nintendo fan but since they make the Wii and DS...
I had gotten N64 and later a GC for my son. He loved them but the only games I ever played on them was Super Smash Bros and Kirby's Crystal Chronicles on N64 and SSBM and Burnout on GC.
He outgrew the GC and got a PS2. I played GTA:SA and more Burnout on that but that was it.
For his 16th he got a Wii (had a DS) which he loved but as it lacked PS2 type games more and more he became disenchanted with it, however, I LOVED it more and more as it suited my tastes and needs. He ended up selling his Wii (and DS) to me and bought a 360 and PSP. So Wii has become the first console I've owned since Colecovision. He still uses the Wii and I use his 360 on rare occasion.
I really fell in love with Endless Ocean and Fire Emblem. Love SSBB of course and to a lesser extent Mario Kart but otherwise not into the Nintendo franchises. Didn't care for Zelda or SMG or Metroid. I do love NSMBW and the Wii titles though. Would love more Kirby. Love playing point and click adventure titles from my couch, quirky titles like Dewy's Adventure, Let's Tap, Boom Blox, Dokapon Kingdom, Zack & Wiki and Opoona and games that rely more on thought than quick reflexes (Tenchu, Tiger Woods, Lara Croft), as long as they are also quick pick up and play titles. I simply haven't the time to invest in a RTS or JRPG for example (which includes FE and Tenchu but once in a while I manage to squeeze some in).