Super Mario 3D Land director Koichi Hayashida will present a postmortem talk at GDC entitled "Thinking in 3D: The Development of Super Mario 3D Land." Attendees will be required to cross a pit of moving blocks while being chased by evil purple versions of themselves in order to attend.
Or, what will actually happen is that Hayashida will discuss developing for 3D devices, and "share development philosophies learned from Mario creator and legendary Nintendo designer, Shigeru Miyamoto."
Another 3DS-centric talk is "Revealing the Truth About Resident Evil Revelations," presented by producer Masachika Kawata. And Cave COO Mikio Watanabe will discuss "Retro and Japanese Social Games on Smartphones," bringing attention to the company's recent endeavors in porting crazy shmups to iOS.