Pharrell teamed up with Hitfix.com to talk about future projects. “I like working with challenging people across the board,” he tells HitFix. Tops on his list is Eminem. Next comes Lady Gaga. “That could be interesting,” he says. Maybe he can go to one of the Jay-Z/Eminem stadium shows and get Hova to put in a good word for him with Marshall Mathers. We last ran into Pharrell at a Bruce Springsteen in 2009 so we had to ask if the Boss also on the bucket list? “I would love to,” Pharrell says, but adds, “I can’t imagine that he would want to or could envision what we do, but I would love to work with him.” I don’t know… we’d love to hear what the two could conjure up together.