I saw this over at jeux-france.com - it's a 30 minute video covering the gameplay and the online mode of Super Mario Strikers Charged.
The link on the jeux-france site is really slow, so I uploaded it
here
The game looks great, just a shame that the friends' codes system isn't tied in to your address book and is specific to the game... hope they don't do it like that for all games.
Overall, it looks as though the online side of things is gonna be great.