I just want to add a little more of what I'm saying about Sonic X.
It could have became a decent show, the animation is ok, the story works. But, once Sonic jump to the real world, everything didn't felt right.
The additional characters were pointless, didn't have no use for the story, adding story that wasn't base off the original game and...Chris! God, at first I thought Cream the Rabbit was annoying, but Chris prove me wrong.
The only decent Sonic anime I could think of are the Sonic OVA. Yea, they added some characters in, but they weren't pointless. The animation was top of it's game, the story/plot works easily, it was funning, the Music fits for the OVA and the dub were good (IMO).
Closest true Sonic anime I ever seen.