[...] And then last week, he went home and was watching a game when a new commercial for "Call of Duty: Black Ops" came on his television. Seen through Walker's eyes, the content was bad enough. A woman in high heels, a hotel concierge, a guy in a fast-food worker's outfit -- they're all shooting automatic weapons and rocket-propelled grenades in an urban warfare setting. He was already disgusted, but about halfway through the spot, Walker did a double take: Wait! Wasn't that Kobe Bryant? Seriously, is that really Kobe Bryant carrying an assault weapon with the word "MAMBA" on...