On Thursday, June 23rd, one of gaming’s greatest icons, Sonic the Hedgehog will celebrate his 20th anniversary. The recognizable blue hedgehog first appeared in 1991 with the debut of the Sega Genesis 16-Bit console and quickly became a household name. In the 20 years that Sonic the Hedgehog videos games have been available, Sonic has become one of the best selling and most well-known characters in video gaming history. Sega talks about what’s new for Sonic fans -- including his new stereo 3D experience -- in this exclusive E3 video below.