Steve Lawrence and Eydie Gorme perform Black Hole Sun.
From the comments:
Johnny Cash can take credit for many things, but I’m not sure postmodernism is among them.One of the weirder covers I've heard lately was Fergie doing a more-or-less straight cover of Heart's "Barracuda." It wasn't horrible in an Orgy-covering-New Order kind of way; it was actually surprisingly OK, but still very head-scratch-worthy. Apparently she recorded it for the Shrek the Third soundtrack.