This is what I posted in another forum. You can copy+paste it for the OP with any changes you wanna make.
Monday June 1st, 2009
Microsoft: 10:30 AM PT / 1:30 PM ET / 6:30 PM GMT
G4 (Also on TV)
GameTrailers (HD)
Official Xbox Site
IGN
GameSpot
Electronic Arts: 2:00 PM PT / 5:00 PM ET / 10:00 PM GMT
G4 (Also on TV)
GameTrailers (HD)
IGN
GameSpot
Ubisoft: 5:00 PM PT / 8:00 PM ET / 1:00 AM GMT
G4 (Also on TV)
GameTrailers (HD)
IGN
GameSpot
Tuesday June 3rd, 2009
Nintendo: 9:00 AM PT / 12:00 PM ET / 5:00 PM GMT
G4 (Also on TV)
GameTrailers (HD)
IGN
GameSpot
Sony: 11:00 AM PT / 2:00 PM ET / 7:00 PM GMT
G4 (Also on TV)
GameTrailers (HD)
IGN
GameSpot
[Not a Press Conference]
Miyamoto + Nintendo Presentation: 6:00 PM PT / 9:00 PM ET / 2:00 AM GMT
No live streams. Hopefully live blogs though. This is where Brawl was shown three years ago. This is where Chris Remo went "Are you making Pikmin 3" and got a reply last year (which was the only relevant news out of Nintendo that show...). So who knows. Maybe something will come of it.
Wednesday June 4th, 2009
Square Enix: 11:00 AM PT / 2:00 PM ET / 7:00 PM PT
No live streams. At the very least 1up is liveblogging it and the blog sites should obviously be liveblogging too.
Konami: 3:00 PM PT / 6:00 PM ET / 11:00 PM GMT
No live streams. At the very least 1up is liveblogging it and the blog sites should obviously be liveblogging too.
Tips
G4 is your best bet if you can get the channel. It can't really crash and is going to be in pretty good quality. GameTrailers is your best bet if you don't have G4 I think. This is their first year live streaming and they're doing it in HD, so I expect a LOT of traffic there. If it stays up, it'll be the best. However, remember that "HD" for GameTrailers just means 1280x720 with a really bad bitrate. It will still be better quality than any other stream.
Last year, IGN had the best quality stream but it was behind by more than a minute which made talking with others who weren't on the same stream hard. After all, they were already onto the next thing.
GameSpot is usually fairly stable, but crappy quality unless you pay. G4 was my favourite stream overall last year.