(2008-06-25) SANTA MONICA, Calif., BUSINESS WIRE — This summer, Activision, Inc.'s (Nasdaq:ATVI) Guitar Hero(R), the #1 best selling video game franchise of 2007, will go coast-to-coast with the American Idols Live! Tour 2008, kicking off in Glendale, Ariz. on July 1. The sponsorship fuses the two pop culture phenomenons together for a second time, building on the success of the dual-branded "Risky Business" TV advertisements that featured season.....