I love the various EAD studios for the mainline Mario, Zelda, etc. but some of their side studios (and 2nd Party studios) like Retro, Monolithsoft, Game Freak, etc. are amazing. If I had to choose 1 I'd probably go with Intelligent Systems for the Fire Emblem, Paper Mario, Advance Wars series along with a few one off cool games like Pushmo, Crashmo, Dragon Quest Wars, etc. also they do WarioWare but I've never gotten into that series.
Honorable mention to Rare, the original DKC SNES games are amazing and games like Battletoads, Killer Instinct, Banjoe-Kazooie, etc. are loads of fun. They may be gone from Nintendo systems but not forgotten by this fan.
Systems Currently Playing: WiiU, PS3, 3DS
Also Have: Atari 2600, NES, SNES, PS1, N64, PS2, Wii, GB, GBC, GBA, DSLite, DSi, Android (RazorMax), iPhone (4), iPad (2)
