What are the most "I can't believe this is made/published by Nintendo" games in your view, and why?

[Leynos]

Bizwas said:

Mad World was the game that got me to borrow a Wii from a remote familiy member ("don't you want the balance board as well?" - "no, just the console"; "how about Just Dance?" - "I'm good, thanks") and rent the game at the local Blockbuster. It would have stood out even on the other consoles, but it was especially notable on the Wii. I would say Conker's Bad Fur Day on N64 was a similar case.

Nintendo never published Bad Fur Day. Just Rare. Nintendo did not Publish Madworld either. That was SEGA.