Dude I love Eminem, I have all his albums on my ipod, and I've been listening to him since my dad got his first album when I was like three or four. His best album is probably The Marshal Mathers LP. My dad's favorite song. Turn da bass up.
My dad is pretty young actually, for being a parent of someone my age. He's actually younger than Eminem himself.
It's pretty much a non-issue right now, but I don't feel like this is entirely appropriate. If it becomes commonplace, it could be a problem.