Tupac himself showed up in hologram form during a Coachella performance that featured Snoop Dogg, Dr. Dre, Eminem, 50 Cent and Wiz Khalifa. Note that Tupac has been dead for over 15 years. Anyway, when we die, we hope someone cares enough about us to bring us back in hologram form for a musical performance. Who knows? It might be fun.