It's a damn shame this dream collaboration had to go down for a simple marketing stunt. Something more substantial between these two companies would have been the best.
Anyway, to show how this E3 stuff was put together, Nintendo went and shot some behind the scenes and interview footage, most of it starring Shigeru Miyamoto and Brian Henson.
It's been a few weeks since this happened, and I still don't quite believe it happened. Look at these guys! Together! Kermit is so amazed he can't keep his shit together, not even for a second.