2. Pearl Jam and Neil Young - "Rockin' in the Free World" (1993)
Right after whipping the crowd at the 1993 VMAs into a frenzy with "Animal," Pearl Jam brought out surprise guest Neil Young and managed to up the energy in the room even more. This was Young at the height of his Godfather of Grunge stage, making him the single coolest classic rock figure in the world. Pearl Jam had been playing "Rockin' in the Free World" since early 1992, but this was the first time they ever do it with Young. The combination was explosive and two years later they teamed up in the studio to record Mirror Ball.