By Harry McCracken | Wednesday, June 22, 2011 at 11:27 pm
He’s Avis to Mario’s Hertz. Or, if you prefer, Pepsi to Mario’s Coke. He’s Sega’s Sonic the Hedgehog, and he turns twenty on Thursday. And even if you know more about him than I do, you don’t know everything there is to know about him. But you’ll learn a lot by exploring Benj Edwards’ “Sonic the Hedgehog Oddities,” which covers two decades of Sonic sidelights: his strange Sonic adventures, his mysterious work with Michael Jackson, his controversial contribution to the science of human genes, and much more.