Mine has to be Dragon Quest: Rocket Slime, a DS spin off of the Dragon Quest series that sees you playing as a slime operating a tank and rescuing the people from your town. You run around the overworld, collecting items to use as ammunition and saving money to upgrade your tank. The art and music are just as great as you'd expect from the Dragon Quest series. It made fantastic use of the DS's dual screens. It's also written for a younger audience, so a lot of it is just really silly and fun! Try it out for sure, I'm so sad there's no sequel :(
That's a cool bit of trivia, I had no idea. Just goes to show how eras change as far as how you get information. Back then if it wasn't something that caught my eye in that months issue of EGM, it wouldn't really be on my radar. I'm still waiting for the GBC port of RE1 that got previewed in EGM and never released :)
Honestly it's still surreal to me to see the Sega logo (or hear the voices "Seeeeegaaaaa" when they use it) on a Nintendo system. It was such a bloody divide back in the day.