Mine will be sent today as well, as the store where I ordered it doesn't have the release date next to it anymore. I can't wait till Friday when I get to play it.
If you've scanned everything you have enough credits to unlock everything. You only get Gold Credits twice: once for beating the boss on Normal/Veteran and once for beating them in Hypermode.
After seeing Snake in action a few times, I think he fits in perfectly. I have nothing against Sonic either. But I agree about someone like Master Chief, he has no place in Brawl. I woudn't mind someone like Crono though.
I see no one has mentioned Sam & Max Hit the Road, which is one of the best and funniest adventures I've played. The newer episodic ones by Telltale are good as well.
Too bad it's delayed. But now I'll probably get another game instead of Zack and Wiki this December. It shortens the wait for Smash in 2008 as well, for me at least.