Sonic the Hedgehog (also called Sonic the Hedgehog 2006, or Sonic Next-Gen to differentiate it from similarly titled games) is a video game featuring Sonic for the Xbox 360 and the PlayStation 3. The Xbox 360 version was released on November 14, 2006, but the PlayStation 3 version had been delayed until January 30, 2007. It was developed by Sonic Team and directed by Shun Nakamura, and marks the 15th anniversary of Sonic the Hedgehog.
...that Amy Rose was called "Rosy the Rascal" in Sonic the Fighters? (In a Sonic comic, "Rosy The Rascal" is an evil version of Amy, from the same dimension as Evil Sonic.)
...that Super Sonic was based on a Golden Warrior's legend?
...that Sega accidentally leaked a beta of Sonic The Hedgehog 4 Episode II as of April 21, 2012?
...there is a gene named after Sonic the Hedgehog? A potential macrocycle inhibitor of this gene was named "Robotnikinin" after Sonic's nemesis, Doctor Robotnik.
...that one of Sonic's original names was Mr.Needlemouse?
...that Sonic is only 3'4" tall?
...that Shadow the Hedgehog was originally going to be called "Terios" which in Japanese means, the shadow of a character.