One of the more interesting things to come out of GDC was the admission by Nintendo that there was a system called "Atlantis." According to Jeremy Parish's blog, the rumor was that the handheld was a 32-bit system that could compete with the likes of the Saturn and the Playstation. Unfortunately, or fortunately, depending on how you look at it, the system never saw the light of day because of a variety of factors that were never really explained, but Parish points to the last second unexpected success of Pokemon as a potential reason.
Anyways, seeing pictures of the handheld right next to the DS makes me wonder how different things might be if Atlantis had come out. While the GBA wasn't exactly what I would call "Saturn and Playstation quality," imagine if in 1996, we did have a portable gaming system that was as good as the stuff we had at home. Would there even be consoles today if Atlantis was a success, proving that next-gen is right in your hands? Or would it have been another Virtual Boy and we'd be buying them on eBay today for irony? Not that Nintendo needs more attention, but I would love to see what else they have that never got past the doors of their R&D department...