‘I’m just gonna miss sitting next to him, learning from him,’ Jackson says of departing ‘American Idol’ judge. By Jocelyn Vena, with reporting by Tim Kash Randy Jackson Photo: MTV News Simon Cowell is singing his swan song as one of the founding judges on “American Idol,” and fellow original judge Randy Jackson said he will miss the Brit, even if he can be a grouch sometimes. “Listen, he’s my best friend … one of my best friends in the world,” Jackson told MTV News last week at the season finale of “America’s Best Dance Crew,” which Jackson executive-produces. “The guy is
