It’s weird that we can still be blown away by Eminem. The dude’s won an Academy Award for Best Song, rapped supersonic in “Rap God,” and been systematically explained as one of the best lyricists of all time. But then he goes and drops an unreal 8-minute pop-culture-encyclopedic freestyle on Sway Calloway’s Shade 45 this morning, and now that’s all we’re talking about.