Let's talk about Intelligent Systems.
Intelligent Systems has to be one of Nintendo's most overlooked development teams. They produced some of Nintendo's best games, yet they don't get as much recognition as Miyamoto or even Rare, which is a huge shame. Their track record includes, but not limited to:
The Metroid series (including the upcoming Metroid 4)
The Fire Emblem series
Panel de Pon (Tetris Attack and Pokemon's Puzzle League)
Paper Mario
Card Hero
Battle Clash and Metal Combat
Most of the games in the Wars series (including the recent Advance Wars)
Galatic Pinball (which explains Samus' cameo)
Wrecking Crew
Wild Gunman
Duck Hunt
Hogan's Alley
Mario Bros. (and Kaettekita Mario Bros.)
Donkey Kong
The Super Mario Land series
Also, they're one of the few companies currently producing original titles for the GBA, rather than rehashing old SNES games. While they could have easily ported Super Metroid or one of the SNES Fire Emblem titles to the GBA (not that I wouldn't mind seeing FE3 or FE4 being ported to the SuFami, knowing that not many people have even heard of the series), they choose to create entirely new games for the system, which says alot about their creativity. I wonder what they can do with the Game Cube.