Check out these special interviews about Super Mario 3D Land and Mario Kart 7!
Right after the press conference stream ended last night, Nintendo aired several special trailers featuring the games highlighted last night. Some of them were special interviews detailing the development of the title.
The first of these is an interview with Shigeru Miyamoto about Super Mario 3D Land:
The second is a video about the development of Mario Kart 7: