A minor add on, but worth mentioning no less, is a flash animation found–and now removed–within the Sonic 4 website.
The file is a flash of Sonic’s prototype running animation as seen in the trailer. Additional concept art and another SWF available too. Hit the jump for more.
Sonic standing from the characters page. This is still on the website.
Takashi Iizuka looking disgusted at commenting in a podcast about this.
I am really excited for this, but I just don’t like Sonic’s running animation. His legs are too stiff.
I agree about sonics legs, Sonics legs need to have the spinning look like this first games.