Marshall Mathers a.k.a. Eminem has always been true to Detroit and as a fellow Michigan transplant (he was born in Missouri), I highly respect that. He's been known to do a little something extra for the Detroit crowd. And this time was no different. Accepting the ALS Ice Bucket Challenge from Dr Dre, after being "dumped on", he then proceeded to challenge his hype man and buddy, Mr. Porter AND Rihanna!