Megaton! Not sure what else I can use to describe Nintendo's E3 event.

[richardhutnik]

yo_john117 said:

Can someone give me a brief description on what Nintendo's biggest announcements were?

Nintendo led early with Zelda and Metroid.  They then go out with other stuff, including the return of Kid Icarus.  Besides this, the 3DS comes out with a large line of top third party support.