If there are better or nicer handheld games designers than Tetsuya Mizuguchi, we'd like to meet them – we got to interview him at E3, and we thoroughly enjoyed the experience.
Mizuguchi is one of the busiest games designers too. Just in terms of PSP games, he had Lumines II and Every Extend Extra playable at the show, while the Lumines universe continues to expand with Lumines mobile, Lumines Plus on PlayStation 2, and a version of Lumines for download on Xbox Live Arcade.