Nintendo's press conference live feed can be found at 10:00 here:
http://livewire.ign.com/2008/e3/index.html
Sony's can be found here:
http://livewire.ign.com/2008/e3/index.html
And I hope whatever Nintendo announces gets used on something other than a multitude of "Mario" games. I love the plumber as much as the next guy, but I'm getting tired of seeing his ass being whored out all the time.